Europeans in the Americas 1,000 years ago

Columbus was not the first European to reach the Americas. The Vikings got there centuries before, although exactly when has remained unclear. Here, an international team of scientists show that Europeans were already active ...

Political ads have little persuasive power: study

Every four years, U.S. presidential campaigns collectively spend billions of dollars flooding TV screens across the country with political ads. But a new study co-authored by Yale political scientist Alexander Coppock shows ...

Antarctic penguins happier with less sea ice

Researchers have been surprised to find that Adélie penguins in Antarctica prefer reduced sea ice conditions, not just a little bit, but a lot. As climate models project rapid reduction of the continent's sea ice over the ...

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