This Week in Nature

With the credit crunch and declines in the stock markets, universities are struggling with losses in their endowments -- Harvard has lost 22 percent and Yale 25 percent of their respective endowments, reports Nature. The losses, says the article, are due to schools investing in hedge funds and venture capital that generally did better than the general market but were more volatile and harder to turn into cash.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.