(AP) -- Wildlife rangers have made the first-ever sighting of a Sumatran rhino deep in the jungles of Borneo, taking video and photos of a single male after a decade-long search, conservationists said Friday.
Researchers say teenagers are sulky and inconsiderate because their brains are changing rapidly.
A new drug-resistant strain of tuberculosis that appears to be almost untreatable has been found in South Africa.
A Miami man received a second heart transplant recently after spending 48 days without a heart.
Oregon wildlife officials are trying to confirm that wolves have returned to the state.