The "science" of astrobiology was launched when strange markings in a Martian meteorite were interpreted to be evidence of life. Here comes another one.
Centuries before antibiotics were put into use for human health, genes for antibiotic resistance already existed in viruses found in human coprolites, new research shows.
At least 40 baleen whales and other species of marine mammals fossilized in a dry desert of Chile have been explained with a "toxic bloom" theory. Does it explain all the findings?