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News Articles Archive
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| Temple Timbers Trace Collapse Of Mayan Culture
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| posted on Thursday, June 04, 2009
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The builders of the ancient Mayan temples at Tikal in Guatemala switched to inferior wood a few decades before they suddenly abandoned the city in the 9th century AD. The shift is the strongest evidence yet that Mayan civilisation collapsed because they ran out of resources, rather than, say, disease or warfare.
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| Paul Hawken May 3, 2009 Graduation Speech
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| posted on Tuesday, May 19, 2009
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When I was invited to give this speech, I was asked if I could give a simple short talk that was “direct, naked, taut, honest, passionate, lean, shivering, startling, and graceful.” Boy, no pressure there.
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| The Earth's 6th Great Mass Extinction: Very Disturbing Statistics
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| posted on Wednesday, May 13, 2009
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There is little doubt left in the minds of professional biologists that Earth is currently faced with a mounting loss of species that threatens to rival the five great mass extinctions of the geological past, the most devasting being the Third major Extinction (c. 245 mya), the Permian, where 54% of the planet's species families lost. As long ago as 1993, Harvard biologist E.O. Wilson estimated that Earth is currently losing something on the order of 30,000 species per year -- which breaks down to the even more daunting statistic of some three species per hour. Some biologists have begun to feel that this biodiversity crisis -- this "Sixth Extinction" -- is even more severe, and more imminent, than Wilson had supposed.
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| Cure For Honey Bee Colony Collapse Disorder?
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| posted on Tuesday, April 14, 2009
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For the first time, scientists have isolated the parasite Nosema ceranae (Microsporidia) from professional apiaries suffering from honey bee colony depopulation syndrome. They then went on to treat the infection with complete success.
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| The New Age Of Extinction
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| posted on Tuesday, April 07, 2009
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There have been five extinction waves in the planet's history -- including the Permian extinction 250 million years ago, when an estimated 70% of all terrestrial animals and 96% of all marine creatures vanished, and, most recently, the Cretaceous event 65 million years ago, which ended the reign of the dinosaurs. Though scientists have directly assessed the viability of fewer than 3% of the world's described species, the sample polling of animal populations so far suggests that we may have entered what will be the planet's sixth great extinction wave. And this time the cause isn't an errant asteroid or megavolcanoes. It's us.
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| Mass Extinctions May Follow One-Two Punch
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| posted on Thursday, March 05, 2009
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According to a new theory about how mass dyings work, cosmic collisions
generally aren't enough to cause a major extinction event. To be truly
devastating, they must be accompanied by another event that inflicts
long-term suffering, like runaway climate change due to massive
volcanic eruptions.
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| How To Survive The Coming Century
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| posted on Saturday, February 28, 2009
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Alligators basking off the English coast; a vast Brazilian desert; the
mythical lost cities of Saigon, New Orleans, Venice and Mumbai; and 90
per cent of humanity vanished. Welcome to the world warmed by 4 °C. Clearly this is a vision of the future that no one wants, but it might
happen. Fearing that the best efforts to curb greenhouse gas emissions
may fail, or that planetary climate feedback mechanisms will accelerate
warming, some scientists and economists are considering not only what
this world of the future might be like, but how it could sustain a
growing human population. They argue that surviving in the kinds of
numbers that exist today, or even more, will be possible, but only if
we use our uniquely human ingenuity to cooperate as a species to
radically reorganise our world.
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