New Hypothesis Explains Why We Sleep
By Giulio Tononi and Chiara Cirelli, scientificamerican.com
Sleep must serve some vital function because all animals do it.
• Evidence suggests that sleep weakens the connections among nerve cells, which is a surprising effect, considering that strengthen …
Sleep help brain to rest from daytime working and aide memory
Dongde.in 您懂的！ » 人人网真是人才辈出啊！方滨兴说的几段话说的真过瘾！ -
China's marriage market: The hypergamous Chinese | The Economist -
MT. That’s true. “There is an opinion that A quality guys will find B quality women, B quality guys will find C quality women, and C quality men will find D quality women…The people left are A quality women and D quality men.”
BBC News: Twitter translates Egypt tweets -
As political turmoil continues in Egypt, micro-blogging site Twitter introduces an auto-translate tool for some leading posters in the country.
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