A useful lesson
A German Shepherd named Pepper sits with two endangered Bengal
tiger cubs and a cougar cub, far right, at the home of veterinarian Rob Zammit outside Sydney, Australia.
Mother and child
An ethnic Albanian refugee from Selce, Macedonia, and her
child look through the window of a bus as they arrive in
Prizren in Kosovo on March 27, after fleeing the fighting in Macedonia two days earlier.
A galaxy's sharp edge
An image produced by the Hubble Space Telescope, released
March 1, shows a perfect "edge-on" perspective of the galaxy
NGC 4013, with huge clouds of dust and gas extending above the galaxy's main disk.
Flying at nearly 35,000 feet, a jet passes over the disk of a
winter half moon above Boston on Jan. 3. The jet leaves
contrails in its wake due to the temperature difference between the hot engine exhaust and the cold air.
A polar bear cub plays near his mother at the Moscow Zoo .
A rainbow trout fingerling peers out from the gullet of a
northern pike at the Alaska Department of Fish & Game aquarium in Anchorage.