The origins of human society are more complex than we thought

In many popular accounts of human prehistory, civilization emerged in a linear fashion. Our ancestors started as Paleolithic hunter-gatherers living in small, nomadic and egalitarian bands. Later, they discovered farming ...

Key points in the genetically modified food debate

One of the biggest stumbling blocks to securing a massive free trade agreement between the United States and Europe is a sharp disagreement on genetically modified foods. Much of the corn, soybean, sugar beets and cotton ...

Ground squirrels use the sun to hide food

Ground squirrels use information on the position of the sun when hiding their food and reuse this information to find their food stash again. The position of the sun serves as a reference point for the animals, which live ...

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