A new Ebola strain has killed health care workers in Uganda. There's no cure for the disease, and this subtype doesn't always show the classic symptoms.
Mysterious modern mummies draw tourists to a small Colombian village. Although scientists don't know how the corpses were preserved, some locals credit a spiny, berry-like fruit.
The first known birth outside China of an extremely endangered South China tiger—there may be no more than 30 in the wild—draws both celebration and concern.
AIDS could spread faster through China's general population now that sex has overtaken drug use as the chief means of contracting the virus that causes the disease, experts fear.
In a find that may ease political and ethical concerns, two teams of scientists have made human skin cells take on many of the properties of embryonic stem cells.
Stem cells from cloned monkey embryos cause cautious optimism in scientists who say the advance may eventually lead to better human medical treatments.
More than 30,000 birds were killed by last weekend's Black Sea oil spill. Meanwhile California environmentalists are cleaning birds by hand after spilled oil there.
The commercial crocodile breeder in Australia behind the genetic mapping project says similar science has helped businesses dealing in cattle, sheep, and pigs.
