Tag Archives: friend

Dot Earth Blog: Is There Room for Agreement on the Merits and Limts of Efficient Lighting

Seeking constructive dialogue on the merits and limits of clean, efficient lighting. See original article here:  Dot Earth Blog: Is There Room for Agreement on the Merits and Limts of Efficient Lighting ; ; ;

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Dot Earth Blog: Is There Room for Agreement on the Merits and Limts of Efficient Lighting

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With Training Program, Central Park Conservancy Spreads Its Wealth

The group’s Five Borough Crew program targets fields and lawns in parks that need restoration work the most. Original link:   With Training Program, Central Park Conservancy Spreads Its Wealth ; ; ;

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With Training Program, Central Park Conservancy Spreads Its Wealth

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Coordinates: Wild and Craggy, Just Like Thoreau

A group of writers recently made the trek to the summit of an unnamed mountain for a minor act of civil disobedience: a ceremony to name it for Thoreau. Read the article:  Coordinates: Wild and Craggy, Just Like Thoreau ; ; ;

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Coordinates: Wild and Craggy, Just Like Thoreau

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Dot Earth Blog: Two Climate Analysts Weigh the Notion of a ‘Good’ Path in the Anthropocene

Two climate scientists explore the idea of a “good” path in the age of man, the Anthropocene. Continued here:  Dot Earth Blog: Two Climate Analysts Weigh the Notion of a ‘Good’ Path in the Anthropocene ; ;Related ArticlesDot Earth Blog: A Darker View of the Age of Us – the AnthropoceneA Darker View of the Age of Us – the AnthropoceneOpinion: Lessons for Climate Change in the 2008 Recession ;

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Dot Earth Blog: Two Climate Analysts Weigh the Notion of a ‘Good’ Path in the Anthropocene

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Plants will reach point where they couldn’t possibly take another bite of our CO2

Plants will reach point where they couldn’t possibly take another bite of our CO2

John Upton

Plants love carbon dioxide. It’s their oxygen. That’s why forests, meadows, and the like are called carbon sinks — they help draw a fraction of our CO2 emissions back out of the atmosphere and into the soil.

But we can’t expect plants to clean up after us forever.

After running computer simulations, European and Japanese scientists concluded that plants that haven’t been bulldozed, poisoned, burnt up, or attacked by invasive pests will continue to absorb more carbon as atmospheric carbon levels rise. But they found that found that rising temperatures could eventually prevent vegetation from absorbing any more of our CO2 pollution.

That’s because heat waves dry out plants’ water reserves and put so much stress on vegetation that it can start releasing more carbon dioxide than it absorbs. As an example, one of the researchers, Andrew Friend of Cambridge, points to a 2003 heat wave in Europe during which “the amount of CO2 produced was sufficient to reverse the effect of four years of net ecosystem carbon sequestration.”

It appears that plants will hit the CO2 saturation point once the globe warms by about 4 degrees Celsius compared with preindustrial times, or 7.4 Fahrenheit. Which is kind of a terrifying number. Although the Earth has warmed a little less than 1 degree C so far, and although world leaders aim to cap warming at 2 degrees C, projections based on our current fuel-burning practices point to warming eventually peaking at about 4 degrees C — or more.

The conclusions of Friend and his colleagues, published Monday in Proceedings of the National Academy of Sciences, suggest that should we hit that 4 C point, carbon dioxide levels could start to really climb as Earth’s plants release more carbon than they absorb.

So there’s one more reason to try to not reach that point. World leaders, listen up!

PNASThe green on this map shows areas where the world’s plants will suck carbon out of the atmosphere — until global temperatures rise more than 4 degrees Celsius. Then we’re in trouble. (Click to embiggen.)


Source
Four degree rise will end vegetation ‘carbon sink’ (University of Cambridge press release), PhysOrg
Carbon residence time dominates uncertainty in terrestrial vegetation responses to future climate and atmospheric CO2, PNAS

John Upton is a science fan and green news boffin who tweets, posts articles to Facebook, and blogs about ecology. He welcomes reader questions, tips, and incoherent rants: johnupton@gmail.com.

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Plants will reach point where they couldn’t possibly take another bite of our CO2

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Leaner BP Blanches at Bill for Cleanup

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Inside of a Dog – Alexandra Horowitz

The bestselling book that asks what dogs know and how they think, now in paperback. The answers will surprise and delight you as Alexandra Horowitz, a cognitive scientist, explains how dogs perceive their daily worlds, each other, and that other quirky animal, the human. Horowitz introduces the reader to dogs’ perceptual and cognitive abilities and then draw […]

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Following Atticus – Tom Ryan

After a close friend died of cancer, middle-aged, overweight, acrophobic newspaperman Tom Ryan decided to pay tribute to her in a most unorthodox manner. Ryan and his friend, miniature schnauzer Atticus M. Finch, would attempt to climb all forty-eight of New Hampshire’s four thousand- foot peaks twice in one winter while raising money for charity. It wa […]

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

From the bestselling author and star of National Geographic Channel’s Dog Whisperer , the only resource you’ll need for raising a happy, healthy dog. For the millions of people every year who consider bringing a puppy into their lives–as well as those who have already brought a dog home–Cesar Millan, the preeminent dog behavior expert, says, “Yes, […]

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The Honest Life – Jessica Alba

As a new mom, Jessica Alba wanted to create the safest, healthiest environment for her family. But she was frustrated by the lack of trustworthy information on how to live healthier and cleaner—delivered in a way that a busy mom could act on without going to extremes. In 2012, with serial entrepreneur Brian Lee and environmental advocate Christopher Gavigan, […]

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Kids Puzzle Fun #1 – Lovatts Crosswords & Puzzles

Junior puzzlers will enjoy hours of quality entertainment with the first issue of Kids Puzzle Fun! This interactive book features ‘Magic Touch’ drawing tools, allowing kids to solve the puzzles by using their finger as a pen. Magic Touch unites the tactile feel of a printed book with a superior digital format, resulting in a more natural, intuitive experienc […]

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The Art of Raising a Puppy (Revised Edition) – Monks of New Skete

For more than thirty years the Monks of New Skete have been among America’s most trusted authorities on dog training, canine behavior, and the animal/human bond. In their two now-classic bestsellers, How to be Your Dog’s Best Friend and The Art of Raising a Puppy, the Monks draw on their experience as long-time breeders of German shepherds and as t […]

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Apocalypse (Digital Collection) – Games Workshop

The greatest heroes of the age lead battalions of troops and tanks against the foe. Super-heavy war machines dominate the conflict like gods of battle as bombardments rain from the skies. This is war on a whole new level. Apocalypse is a new way of playing games of Warhammer 40,000. Allowing you to field as many miniatures as you like, in any combinati […]

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How to Be Your Dog’s Best Friend – Monks of New Skete

For nearly a quarter century, How to Be Your Dog’s Best Friend has been the standard against which all other dog-training books have been measured. This new, expanded edition, with a fresh new design and new photographs throughout, preserves the best features of the original classic while bringing the book fully up-to-date. The result: the ultimate trai […]

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Apocalypse – Games Workshop

The greatest heroes of the age lead battalions of troops and tanks against the foe. Super-heavy war machines dominate the conflict like gods of battle as bombardments rain from the skies. This is war on a whole new level. Apocalypse is a new way of playing games of Warhammer 40,000. Allowing you to field as many miniatures as you like, in any combinati […]

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Warlords of the Dark Millennium: Ezekiel – Games Workshop

Ezekiel is the chief Librarian of the Dark Angels Space Marines; keeper of their most closely guarded secrets and ancient lore. As bearer of the Book of Salvation Ezekiel is an inspiration to his battle-brothers in combat, the powerful Librarian and sacred relic steadying them before the foe. About this Series: The galaxy burns with the fires of countless wa […]

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Leaner BP Blanches at Bill for Cleanup

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