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Health insurers want you to keep smoking, Harvard doctors say

Health and life insurance companies in the U.S. and abroad have nearly $4.5 billion invested in tobacco stocks, according to Harvard doctors.

“It’s the combined taxidermist and veterinarian approach: either way you get your dog back,” says David Himmelstein, an internist at the Harvard Medical School and co-author of a letter published in this week’s issue of the New England Journal of Medicine ...

June 3, 2009 — Brendan Borrell

Rooks make hooks (and other tools) in labs, but not in wild

Crows are known for their above-birdbrain intelligence, and New Caledonian crows have been observed using tools in their day-to-day lives. Other members of the crow family, however—such as rooks—don't seem to have this tool-using tendency in their natural habitats...

May 26, 2009 — Katherine Harmon

Mockingbirds quickly recognize repeat human intruders

People may have a tough time telling one squawking bird from another. Mockingbirds, on the other hand, quickly learn which humans to watch.

"Mockingbirds certainly do not view all humans as equal," Doug Levey, lead author of a study of published this week in Proceedings of the National of Sciences , said in a statement...

May 19, 2009 — Katherine Harmon

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Scientific American Unlimited

Scientific American Unlimited