Category Archives: organic

Predicting the climate is hard. So one scientist wants to cut corners

supermodel problems

Predicting the climate is hard. So one scientist wants to cut corners

By on 12 May 2015commentsShare

Computer scientist Krishna Palem says we should make climate models less “exact.”

Think of it like making a bed: You can meticulously even out, fold, and tuck everything in all the right places — or you can just roughly flatten the sheet and blanket before throwing on the comforter, and it all looks the same in the end. Right, mom?

The problem with current climate models is that they already take an insane amount of computing power, and they’re still inadequate. The most meticulous, high-powered number crunching is still unable to capture local, small-scale processes like cloud formation. So the basic idea of Palem’s “inexact computing” is that, in certain circumstances, computers can afford to skimp on accuracy in order to save on time and energy. Here’s more from The New York Times:

Current climate models used with supercomputers have cell sizes of about 100 kilometers, representing the climate for that area of Earth’s surface. To more accurately predict the long-term impact of climate change will require shrinking the cell size to just a single kilometer. Such a model would require more than 200 million cells and roughly three weeks to compute one simulation of climate change over a century.

What scientists really need to run such absurdly large simulations are entirely new supercomputers — ones that can handle a billion billion calculations per second:

Such machines will need to be more than 100 times faster than today’s most powerful supercomputers, and ironically, such an effort to better understand the threat of climate change could actually contribute to global warming. If such a computer were built using today’s technologies, a so-called exascale computer would consume electricity equivalent to 200,000 homes and might cost $20 million or more annually to operate.

Well, shit … what was that about corner-cutting alternatives?

Dr. Palem says his method offers a simple and straightforward path around the energy bottleneck. By stripping away the transistors that are used to add accuracy, it will be possible to cut the energy demands of calculating while increasing performance speeds, he claims.

His low-power crusade has recently attracted followers among some climate scientists. “Scientific calculations like weather and climate modeling are generally, inherently inexact,” Dr. Palem said. “We’ve shown that using inexact computation techniques need not degrade the quality of the weather-climate simulation.”

Indeed, in a paper published last year, Palem and his colleagues showed that a mini model of atmospheric dynamics still worked when they ran it with inexact computing. Palem is now looking for money to test the method on full-scale climate models.

Of course, some people will always insist that inexact computing — like half-assedly made beds — is inadequate. Here’s hoping climate saboteurs stick with their “I’m not a scientist” schtick on this one and resist taking cheap shots at something they truly don’t understand.

Source:
A Climate-Modeling Strategy That Won’t Hurt the Climate

, The New York Times.

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Predicting the climate is hard. So one scientist wants to cut corners

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No, really, your birth control is supposed to be free now

put a (nuva) ring on it

No, really, your birth control is supposed to be free now

By on 11 May 2015commentsShare

For National Women’s Health Week, we’ll be highlighting women’s health issues in the United States.

Let’s play an American history game: Where Were You when you realized that the Affordable Care Act really, actually meant that you wouldn’t have to pay a copay for your birth control?

For me, it was a Walgreens on the north end of Seattle in February 2014, staring dumbfoundedly at a pharmacist who assured me that no, really, there was no charge for those pills.

This was a very happy moment, but one that not all privately insured, contraception-using women have had yet — which is really not OK. So new White House regulations, just issued today, will firmly remind health insurers that, yes, they are required to provide birth control to women at no cost.

Why is this reminder necessary? Vox reports:

Two recent investigations — one by the Kaiser Family Foundation and another by the National Women’s Law Center — found that not all insurance plans were abiding by these rules.

Some insurers seemed to blatantly disregard the Obamacare mandate. The KFF study — which looked at a sample of 20 insurers in five states — found one that simply didn’t cover the birth control ring and four that “couldn’t ascertain” whether they covered birth control implants. These are potential violations of the law.

This is really not complicated: Provide free, easy-to-get birth control, and women’s lives will universally improve. Fail to do so, and life becomes an Amy Schumer sketch — but way less fun. The birth control mandate of the Affordable Care Act has already had real, positive effects on women’s access to contraception. The percentages of privately insured women who have had no copays on their birth control have increased dramatically — in the case of birth control pills, for example, from 15 percent to 67 percent.

Basically, insurance companies, like surly teens, just need to be constantly reminded of what they’re supposed to do. If yours isn’t cooperating, call it every day until it does — or, alternatively, until it lashes out and gets a small, regrettable ankle tattoo.

Source:
The White House just got aggressive enforcing Obamacare’s birth control mandate

, Vox.

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No, really, your birth control is supposed to be free now

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The oldest city in the U.S. could be totally screwed by rising seas

The oldest city in the U.S. could be totally screwed by rising seas

By on 11 May 2015commentsShare

Rising seas are about to engulf the oldest city in the U.S., and it doesn’t look like anyone’s going to do anything about it. That’s because the city of St. Augustine happens to be in Florida, where pythons roam free, Mickey Mouse is king, and climate change doesn’t exist.

St. Augustine is home to Spanish explorer Ponce de Lyon’s Fountain of Youth, an old military fortress, and — like any respectable historical site — plenty of brick roads and old-ass buildings. The 450-year-old national landmark also happens to be one of many cities along Florida’s coast getting increasingly worried about rising seas — a curious trend, given the state’s exemption from a certain global phenomenon.

To figure out what the state plans to do about these mysterious rising seas, Associated Press reporters sifted through thousands of state documents and emails. Here’s what they found:

Despite warnings from water experts and climate scientists about risks to cities and drinking water, skepticism over sea level projections and climate change science has hampered planning efforts at all levels of government, the records showed. Florida’s environmental agencies under [Gov. Rick] Scott have been downsized and retooled, making them less effective at coordinating sea level rise planning in the state, the documents showed.

“If I were governor, I’d be out there talking about it (sea level rise) every day,” said Eric Buermann, the former general counsel to the Republican Party of Florida who also served as a water district governing board member. “I think he’s really got to grab ahold of this, set a vision, a long-term vision, and rally the people behind it. Unless you’re going to build a sea wall around South Florida, what’s the plan?”

What’s the plan, indeed, Gov. Scott? The AP found that local officials in St. Augustine and elsewhere are trying to adapt to rising seas but are pretty much on their own:

Cities like St. Augustine have looked for help, but Scott’s disregard for climate change science has created a culture of fear among state employees, records show.

The administration has been adamant that employees, including scientists, not “assign cause” in public statements about global warming or sea level rise, internal government emails show.

For example, an April 28, 2014, email approving a DEP [Department of Environmental Protection] scientist’s request to participate in a National Geographic story came with a warning: “Approved. Make no claims as to cause … stay with the research you are doing, of course,” the DEP manager, Pamela Phillips, warned.

“I know the drill,” responded Mike Shirley, manager of the Guana Tolomato Matanzas National Estuarine Research Reserve near St. Augustine.

Agency spokeswoman Engel said Phillips was a lower-level staffer whose views didn’t necessarily reflect the entire administration. When asked whether staffers are told not to assign cause, Scott’s office said “the allegations are not true.”

Bigger cities like Tampa and Miami are also up shit creek without a state-issued paddle. According to the AP, South Miami is so worried that it called for the southern half of Florida to secede from the rest of the state, leaving its northern brethren to their own self-destructive devices.

In a place like St. Augustine, rising sea levels will certainly wreak less economic havoc than in a big city like Miami, but wouldn’t the loss of America’s oldest city mean something? Is a band ever the same after losing its original lead?

Source:
Sea rise threatens Florida coast, but no statewide plan

, The Associated Press.

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The oldest city in the U.S. could be totally screwed by rising seas

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How to Trick a Child Into Eating a Vegetable

Mother Jones

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Michelle Obama has gotten a lot of flak for her efforts to improve the nutritional value of school lunches and reduce the rate of childhood obesity. On Twitter, for instance, kids have been using the hashtag #ThanksMichelleObama to complain that new lunch standards she spearheaded have resulted in less appetizing meals.

By some accounts, the First Lady’s school lunch program seems to be working. A 2014 study from Harvard University’s School of Public Health found that compared to 2011, kids eating school lunches were selecting 23 percent more fruit overall after the guidelines were imposed in 2012. What’s more, vegetable consumption per student rose 16 percent. The problem is that the amount of food left uneaten and thrown away seems to have increased considerably, as well. According to a study from the School Nutrition Association, schools reported an 81 percent increase in the amount of food left on plates, with vegetables making up the majority of the waste.

The fact that kids (and many adults) generally don’t like vegetables isn’t exactly an earth-shattering discovery. Parents and policy makers have long struggled over the question of how to get children to eat their broccoli. But Traci Mann, a health psychologist who has spent much of her career studying our eating habits, has come up with a simple solution. “Just put the vegetable in a competition it can actually win,” said Mann on a recent episode of the Inquiring Minds podcast.

Of course, in a contest between vegetables and, say, mac and cheese, the veggies don’t stand much of a chance. But Mann has an elegant strategy for improving the odds. “As far as I can tell,” she says, “the only competition a vegetable can routinely win is the competition between a vegetable and nothing.” Mann first discovered this kernel of wisdom by observing the behavior of her own children. In a Los Angeles deli, when her kids were 3 and 6, she watched them happily consume sauerkraut while waiting for their meals to arrive. “After much scholarly effort,” writes Mann in her newly released book Secrets from the Eating Lab, “I developed a highly technical theory about why they ate the sauerkraut: They ate it because it was there.”

And, being a scientist, Mann decided to put this theory to the test. Using schoolchildren as subjects, Mann and her colleagues conducted two field studies in an elementary school where most of the students were eligible for free or reduced-cost lunches. In one study, the scientists first figured out what the baseline consumption rate was for a reasonably well tolerated vegetable—in this case, carrots. Then, the scientists waited three months for the exact same menu to be served again. This time, as the children waited at their class tables before receiving their full meals, they had access to small paper cups filled with baby carrots. Once the meal was over, the scientists painstakingly weighed all the leftover carrots in cups, on the floor, on trays, and anywhere else they could be found. Sure enough, kids ate more carrots when they were left alone with them at their tables than they did on a normal day. The result, wrote the researchers, was an “increase in carrot consumption of over 430% that was almost entirely driven by many students eating carrots from the cups before entering the line.”

Encouraged by these findings, the scientists then conducted a follow-up field study in which broccoli was the prized vegetable. On a regular day, broccoli was among the foods that the children could select as they went through the cafeteria line. But on the study days, the students were handed cups of broccoli while they waited for the rest of their meal. Once again, the experiment worked. The students as a whole consumed far more broccoli when that was the first food they had access to.

Mann and her colleagues even tested the “veggies first” theory on college students, comparing their consumption of baby carrots and M&Ms while manipulating which snack was offered first. Undergraduates not only ate more carrots when that was the first option, but they also then ate fewer M&Ms.

“For most of us, the main obstacle to eating a vegetable is that we don’t like them as much as the other stuff,” says Mann. And most of us are also pretty lazy. Since vegetables in general require more preparation than many other foods, and are not as tasty, we tend to eat less of them than is good for us.

But there’s an upside to our laziness: If the goal is to limit consumption of an unhealthy food, even a minor obstacle can make a difference. On Inquiring Minds, Mann describes a Dutch study of M&M consumption. “They showed that if you have a bowl of M&Ms on the table right by you, you’ll eat a lot,” says Mann. That’s not surprising. But if you place that bowl farther away, requiring you to get up from your desk to grab a handful, consumption decreases significantly. “Here’s the even more amazing thing,” adds Mann. “Take that same bowl of M&Ms, put it on the same table that you’re sitting at—except instead of right by your hand, put it two feet across the table.” Within-reach, but requiring a bit of stretching. It turns out that you’ll consume just as few M&Ms as if they were across the room.

Adding obstacles, even tiny ones, is so effective at reducing unhealthy food intake that even a simple manipulation in Google’s New York offices made headlines recently. When M&Ms were put in opaque rather than glass containers, and healthier alternatives such as figs and nuts were made more visible, Google employees consumed 3.1 million fewer calories from M&Ms over seven weeks, according to the Washington Post.

One of Mann’s experiments shows just how much of an impact the visibility of food can have. In another effort to get school kids to eat more veggies, her team placed photographs of green beans and carrots into two of the compartments on the children’s lunch trays. With this simple manipulation, they found that twice as many kids served themselves green beans and nearly three times as many took carrots, compared with what happened on a typical day.

Mann attributes the success of the photos to the social forces that impact our eating habits. It’s not effective to simply tell a kid to eat his vegetables. But putting photos on the trays, according to Mann, sends the message that other kids are choosing those veggies and placing them in those two compartments. And, as any parent knows, fitting in can be a powerful motivator.

To listen to our full interview with Mann, click below.

Inquiring Minds is a podcast hosted by neuroscientist and musician Indre Viskontas and Kishore Hari, the director of the Bay Area Science Festival. To catch future shows right when they are released, subscribe to Inquiring Minds via iTunes or RSS. You can follow the show on Twitter at @inquiringshow and like us on Facebook.

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How to Trick a Child Into Eating a Vegetable

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Elevated paths give San Francisco cyclists the high ground

Elevated paths give San Francisco cyclists the high ground

By on 6 May 2015commentsShare

Pretty soon, bikers in San Francisco won’t just have the moral high ground over cars: They’ll literally ride on higher ground.

The city plans to install new elevated bike lanes that will not only keep cyclists safe from speeding cars, but also give them a better vantage point from which to flip off the drivers of said cars. Here’s CityLab with the details:

The city’s Municipal Transportation Agency will oversee the construction of an elevated pathway on Valencia Street in the southern Mission District. The curb-hugging lane will be raised about 2 inches above the road surface, and will measure 6-feet wide with an additional 5-foot “buffer zone.” The city will follow up with a handful of other raised lanes next year, all planned for areas with high rates of bicycle injuries.

Of course, this is already a thing in Europe, where cyclists rule and drivers drool:

Raised lanes are a relatively new concept in the United States, though they’ve been around for a while in Europe. The idea is that by jacking up the path a bit, motorists will be less likely to stray into cyclist space. Cyclists, meanwhile, won’t feel as compelled to ride on the sidewalk in heavy-traffic corridors. It’s a minimalist form of what’s known as a protected bike lane, and one that’s not as in-your-face as, say, defensive lines of bollards or planters.

You can imagine the city of San Francisco is a lot like a mom (let’s call her Fran) with three kids: the jerky eldest (Auto), the quiet middle child (Walker), and the quirky and rebellious younger one (…Bike? Wheeler?), and this is Fran’s way of saying “Auto, Bike — stop hitting each other! And leave your poor brother Walker alone; if he just wants to sit by himself and read, let him!”

Source:
San Francisco Wants to Lower Bike Injuries by Raising Bike Lanes

, CityLab.

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Elevated paths give San Francisco cyclists the high ground

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We just hit 400 ppm CO2 in the atmosphere, for a whole month

We just hit 400 ppm CO2 in the atmosphere, for a whole month

By on 6 May 2015commentsShare

I have good news, and I have bad news. First, the bad news: The atmosphere just passed another doom threshold — there are now more than 400 parts per million of CO2 up there.

Actually, we’ve crossed this line before, but that was just for a few hours or days at a handful of observing sites. This time we’re talking the average global concentration of CO2 for a whole month, making March 2015 officially the doomiest month of the millennium so far. From NOAA:

“It was only a matter of time that we would average 400 parts per million globally,” said Pieter Tans, lead scientist of NOAA’s Global Greenhouse Gas Reference Network. “We first reported 400 ppm when all of our Arctic sites reached that value in the spring of 2012. In 2013 the record at NOAA’s Mauna Loa Observatory first crossed the 400 ppm threshold. Reaching 400 parts per million as a global average is a significant milestone.

For reference, the pre-Industrial levels of CO2 were around 280 ppm, and the first measurement made in 1959 at Mauna Loa was 313 ppm. The number has been growing since then, at an average rate of more than 1 ppm per year since 1977 (some years the increase was well above 2 ppm). Scientists think we need to reduce atmospheric CO2 concentration to 350 ppm if we are to avoid the worst of climate chaos — to which pessimists say, fat chance.

The good news is, uh, I didn’t really think this far ahead. I guess the good news is that even though we’ve blundered past yet another bad milestone, there are some positive trends simultaneously at work — like the fact that emissions from energy sources flatlined in 2014 — not enough to end global warming in and of itself, but a good sign that we are at least starting to reverse the crazy emissions spike we’ve been in since the ’70s.

To weigh the pros and cons yourself, check out NOAA’s piece here, and for truly riveting live coverage, you can follow NOAA’s carbon-counting in real time here.

Source:
Greenhouse gas benchmark reached

, NOAA.

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We just hit 400 ppm CO2 in the atmosphere, for a whole month

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Are You Being Greenwashed?

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Are You Being Greenwashed?

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DIY Green Tea Toner

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DIY Green Tea Toner

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Climate change is melting Arctic archaeological sites

sod it all

Climate change is melting Arctic archaeological sites

By on 29 Apr 2015commentsShare

If you think about it — bear with us here — the Arctic is basically a huge freezer full of history’s leftovers. There’s a millennium worth of crusty villages, a bunch of gnawed-on beluga bones, and don’t forget the last of that takeout mammoth wayyyy at the back.

What’s even grosser than that delightful mental image is the fact that, as the Arctic heats up, all that old stuff formerly frozen in permafrost is thawing out — i.e. your leftovers are starting to rot — threatening the integrity of archaeological sites around the Arctic. Here’s the story from Motherboard:

[With] global climates heating up, the Arctic’s active layer [the top layer of permafrost that melts and refreezes every year] extends deeper every summer, and one of the largest contributing factors to the destruction of arctic sites is thawing permafrost. This great thaw is leaving organic artifacts to rot — or, in some cases, wash into the ocean — forcing arctic archaeologists to survey and excavate the most important sites before they’re gone.

Those organic artifacts include entire centuries-old Inuit sod-houses, perfectly preserved in their deep-freeze … until now. Since they’re too big to be moved, archaeologists are trying to map digitally before they melt like so much ice cream left out on the counter.

One of the team’s excavation sites, what was once the village of Kuukpak, is a classic area for large scale beluga whale hunting in historic Inuit culture. The site is in an ecotone — an area where multiple ecozones overlap — making it an incredibly rich environment with over 50 species of mammals as well as numerous fish and bird species. Such generous conditions made Kuukpak home to some of the largest Inuit villages ever to have existed.

“This site had probably about 500 people, compared to an average [site] of about 150, this site is really a massive site by Northern standards,” [team leader] Dr. Friesen said.

Along with a wealth of artifacts, like animal bones and hunting tools, Dr. Friesen’s team excavated the first fully uncovered sod house, a traditional Inuit lodging that would have housed between 15 to 30 people in the 1400s.

But Kuukpak won’t last long. Like so many other rich arctic archaeological sites it is being destroyed by erosion at an alarming rate.

In places like Kuukpak, the coastline is moving inland 15 feet every year, as sea level rises and permafrost subsides into muck. Friesen explained that all that erosion can add up fast: “When you think of an average early Inuvialuit site that might be 100 metres by 30 metres, that means you can lose an entire site in a decade.”

To give my admittedly overstretched metaphor of the thawing freezer one last reach: I guess that means we better start digging into our leftovers — but in this case, literally digging.

Source:
The Great Arctic Thaw Is Seriously Worrying Archaeologists

, Motherboard.

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Climate change is melting Arctic archaeological sites

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From toilet to table: Peecycling research at U of M investigates urine as fertilizer

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The Life-Changing Magic of Tidying Up by Marie Kondo – A 15-minute Summary & Analysis – Instaread

PLEASE NOTE: This is a  summary and analysis  of the book and NOT the original book.  The Life-Changing Magic of Tidying Up by Marie Kondo – A 15-minute Summary & Analysis   Inside this Instaread: Summary of entire book, Introduction to the important people in the book, Key Takeaways and Analysis of the Key Takeaways. […]

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The Stolen Dog – Tricia O’Malley

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Codex: Craftworlds (Enhanced Edition) – Games Workshop

Inscrutable and deadly, the craftworld Eldar are the remnants of a once-great galactic empire who cross the stars on ships so vast they are able to house entire civilisations and the armies which defend them. When the craftworld Eldar go to war, lithe-limbed Aspect Warriors slay the foe with breathtaking speed and skill, while sleek-hulled […]

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How to Raise the Perfect Dog – Cesar Millan & Melissa Jo Peltier

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Inscrutable and deadly, the craftworld Eldar are the remnants of a once-great galactic empire who cross the stars on ships so vast they are able to house entire civilisations and the armies which defend them. When the craftworld Eldar go to war, lithe-limbed Aspect Warriors slay the foe with breathtaking speed and skill, while sleek-hulled […]

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From toilet to table: Peecycling research at U of M investigates urine as fertilizer

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