- News Home
6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
- About Us
Snails Shed Light on Collapse of Civilization
28 February 2014 12:15 pm
One of the greatest civilizations that ever existed collapsed some 4000 years ago, and now geologists believe they may know why: climate change. By analyzing snail shells from the ancient lake Kotla Dahar in Haryana, India, researchers could decipher how much rain fell when the snails lived thousands of years ago. The results, published this week in Geology, demonstrate a sudden weakening of the summer monsoon that led to drought—and the likely abandonment of the Indus Valley civilization’s major cities. Although climate change has been suggested as a cause of decline in the past, there was never any direct evidence until now.
See more Signal/Noise.