HIV came straight to Haiti from Africa, then traveled to the United States and much of the rest of the world, suggests a new study into the mysterious history of AIDS.
Using genes from soil microbes and rabbit livers, two independent research groups developed plants that can remove harmful chemicals from the environment.
Former U.S. Vice President Al Gore and the UN's Intergovernmental Panel on Climate Change won the Nobel Peace Prize today for their efforts to publicize global warming.
The 2007 Nobel Prize in medicine will go to three scientists who developed a technique for genetically modifying mice that enables researchers to study gene-related human diseases.
The facial cancer that is killing Tasmanian devils at an alarming rate is contagious and spreads when the animals bite each other, scientists have announced.
White-backed vultures—once plentiful in India and Pakistan—have become critically endangered. Now environmentalists are urging a ban on a common veterinary drug that may be poisoning the birds.
