The optical laser has grown to a $10 billion global technology market since it was invented in 1960, and has led to Nobel prizes for Art Ashkin for developing optical …read more Source:: Science
Tag: global
Tectonics in the tropics trigger Earth’s ice ages
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•Over the last 540 million years, the Earth has weathered three major ice ages — periods during which global temperatures plummeted, producing extensive ice sheets and glaciers that have stretched …read more Source:: Science
Migrating snowline plays outsized role in setting pace of Greenland ice melt
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•Meltwater from Greenland’s ice sheet is a leading contributor to global sea level rise, and a new study shows that an underappreciated factor — the position of the snowline on …read more Source:: Science
A very small number of crops are dominating globally: That’s bad news for sustainable agriculture
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•A new study finds that globally we’re growing more of the same kinds of crops, and this presents major challenges for agricultural sustainability on a global scale. …read more Source:: Science
Antarctica losing six times more ice mass annually now than 40 years ago
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•Antarctica experienced a sixfold increase in yearly ice mass loss between 1979 and 2017, according to a new study. Glaciologists additionally found that the accelerated melting caused global sea levels …read more Source:: Science
How should autonomous vehicles be programmed?
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•A massive new survey reveals some distinct global preferences concerning the ethics of autonomous vehicles, as well as some regional variations in those preferences. …read more Source:: Science
Scientists call for microbial ‘Noah’s Ark’ to protect global health
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•A team of researchers is calling for the creation of a global microbiota vault to protect the long-term health of humanity. …read more Source:: Science
First mapping of global marine wilderness shows just how little remains
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•reporting in Current Biology on July 26 have completed the first systematic analysis of marine wilderness around the world. And what they found is not encouraging; only a small fraction …read more Source:: Science
‘Snowball Earth’ resulted from plate tectonics
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•About 700 million years ago, the Earth experienced unusual episodes of global cooling that geologists refer to as ‘Snowball Earth.’ Geologists now suggest that those major climate changes can be …read more Source:: Science
Atlantic Ocean circulation at weakest point in more than 1,500 years
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•New research provides evidence that a key cog in the global ocean circulation system hasn’t been running at peak strength since the mid-1800s and is currently at its weakest point …read more Source:: Science