When the oceans became acidic

When the oceans became acidic

Colossal volcanic eruptions some 250 million years ago have long been linked to the widespread global extinction known as the “Great Dying“, a 60,000-year period that saw 90 percent of all sea creatures and more than two-thirds of all plants and animals on land die off. But new research has for the first time identified the specific cause of the […]

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Inequality: Why the poor are getting poorer

Why is America a nation of growing inequality? The yawning economic and cultural gap between the well-to-do and the working class—now wider than at almost any point in our history—has academics and pundits searching for explanations. Now, a new Harvard study provides an illuminating—and “horrifying”—insight into what’s going on. The affluent and the working classes, the study found, are raising […]

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Vines strangle carbon storage in tropical forests

Tropical forests account for a third of the total carbon fixed by photosynthesis. Lianas’ increasing abundance may be driven by changing climate, increased disturbance or by more severe seasonal drought. By reducing the ability of tropical forests to accumulate and store carbon released through burning fossil fuels, lianas could cause a positive feedback loop, accelerating climate change. “This study has […]

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The Side-Effects of Living Longer

Global life expectancy has risen by more than six years since 1990 as healthy life expectancy grows; ischemic heart disease, lower respiratory infections, and stroke cause the most health loss around the world.  SEATTLE — People around the world are living longer, even in some of the poorest countries, but a complex mix of fatal and nonfatal ailments cause a […]

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