Scientists explain scale of Japanese tsunami

Scientists at Cambridge University have developed a model that may show why some tsunamis—including the one that devastated Japan in March 2011ar—e so much larger than expected. The Japanese tsunami baffled the world's ...

Earth's life support systems discussed

In the search for life on Mars or any planet, there is much more than the presence of carbon and oxygen to consider. Using Earth's biogeochemical cycles as a reference point, elements like nitrogen, iron and sulfur are just ...

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