* Baboons seek "comfort" after deaths in the family:
When a lion killed Sierra the baboon, her mother looked to friends for support.
* Possible "earliest" slave remains found:
Researchers are studying remains of what they say may be some of the earliest slaves brought to the Americas from Africa.
* When déjà vu becomes unbearable:
If you can't watch TV because everything seems to be a repeat -- even the news -- you may have a problem. Scientists are looking into it.
* Can you catch obesity?:
If some researchers are right, you may soon be hearing a surprising piece of advice to avoid obesity: wash your hands.
* Vaccine gives "100%" bird flu protection in animal study:
Mass vaccinations of livestock could help stop the avian flu that is causing global concern, scientists suggest.