Archive: 10/3/2008

Egalitarian revolution in the Pleistocene?

Although anthropologists and evolutionary biologists are still debating this question, a new study, published in the open-access journal PLoS ONE, supports the view that the first egalitarian societies may have appeared tens o ...

Oct 03, 2008 4.2 / 5 (19) 4

Singing to females makes male birds' brains happy

The melodious singing of birds has been long appreciated by humans, and has often been thought to reflect a particularly positive emotional state of the singer. In a new study published in the online, open-access journal ...

Oct 03, 2008 4.7 / 5 (3) 0

Decline in Alaskan sea otters affects bald eagles' diet

Sea otters are known as a keystone species, filling such an important niche in ocean communities that without them, entire ecosystems can collapse. Scientists are finding, however, that sea otters can have even farther-reaching ...

Oct 03, 2008 4.8 / 5 (4) 0
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