May 6th, 2005 · A new report from the Centers for Disease Control and Prevention finds that pet rodents such as hamsters, mice and gerbils can transmit a drug-resistant strain of the salmonella bacteria to people.
Jan 13th, 2005 · A fossil find overturns the conventional wisdom that the earliest mammals were all rodent-sized and meek. One of the fossils was found with its last meal -- a young dinosaur -- still in its stomach.
Jan 7th, 2005 · Among the week's stories: a blood protein that may be as important as cholesterol for heart attack patients; malaria in the Caribbean; and risks from pet rodents.
Dec 27th, 2004 · Working backward from the genes of living animals, biologists have reconstructed part of the DNA sequence of the mammal from which humans descended. The earliest mammal on the planet was a small rodent-like creature that existed some 70 million years ago. NPR's Joe Palca reports.