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The damage man has caused to the environment is one of the recurring themes in the work of husband and wife photographers Shana and Robert ParkeHarrison. But instead of documenting environmental destruction, they combine performance, sculpture, and painting into surreal photographs featuring Robert as an Everyman character.

Researchers in Germany say they have drawn up a map of about 60 percent of the genetic "letters" in the genome of Neanderthals. The map is expected to help reveal what genetic differences allowed humans to leave Neanderthals in the evolutionary dust.

Talks on Iran's nuclear program may have produced a deal that could ease Western fears that the Islamic Republic is out to create a nuclear bomb. The agreement could be the key to resolving the long-running dispute over Iran's nuclear program.

Israeli diplomats have fled Egypt after an attack on their embassy in Cairo and were forced to leave Turkey after a diplomatic row. As Israel appears to lose its Muslim allies, many worry about possible repercussions on the peace process, Israel's security and the U.S. role in the region.

In addition to drooling and walking on all fours, both young infants and dogs sometimes ignore what they see with their own eyes and instead trust a human "teacher." Dogs may have evolved this trait to help them live with people, because, as a new study shows, their wolf relatives don't make the same mistake.

San Diego Mesa College officials watched construction crews place the last steel beam atop a structure yesterday that will be home to students studying to be health technicians.

Stem cell research offers great promise for people with incurable diseases. But promises won't help those who don't have time to wait for those medical breakthroughs. A man, dying of Lou Gehrig's disease, has gone out of the country in search of treatment.

Director Michael Moore's latest documentary, Sicko, is an indictment of the U.S. health care system. Melissa Block sizes up Sicko — as entertainment and expose — with film critic Bob Mondello and science correspondent Joanne Silberner.

A popular blood test for prostate cancer is leading many men to get treated for cancer when the treatment might not make much of a difference, according to a study in the current issue of the Journal of the National Cancer Institute. The study's conclusions are in agreement with two earlier studies published last spring in the New England Journal of Medicine.

President Obama has chosen one of Africa's most stable democracies for his first official visit to the continent. Africa watchers hope he'll outline his foreign policy for Africa in a speech to Ghana's Parliament.