Photo of the day

Director of photography Doug Anderson films the coral reefs of Raja Ampat, Indonesia.

Conservators restore Lucanian tombs in Paestum in Rome, Italy.

A pod of Indo-Pacific bottlenose dolphins swimming across the coral reefs of the Red Sea, Egypt.

A baby langur watches the world go by from the safety of its mother's arms.

Astronaut Sally Ride, the first American woman to fly in space, smiles aboard the Space Shuttle Challenger during the STS-7 mission in June 1983.

A bait ball in the open ocean near Azores.

A family of meerkats stand in front of the setting sun.

Oliver Johnson relaxes on his float-house.

A European mantis nymph on a flower.

Tam O'Shaughnessy and Sally Ride in Sydney, Australia in 2004.

A pair of Laysan albatross in Midway Atoll.

The Colosseum is the largest amphitheater ever built in ancient Rome.

As it grows and molts, the mad hatterpillar stacks old head casings on top of its head. Scientists think it is used as a decoy against would-be predators and parasites, and when needed, it can also be used as a weapon.

A close up of a cow's nose moisturized by milk.

Astronaut Sally Ride next to a T-38 Jet during training at NASA Johnson Space Center.

The doctor's dogs, Skittles and Happy, sit on the deck of the new boat.

A female proboscis monkey nurses her baby in a tree.

Oliver Johnson and his dog, Belle, relax on his float-house.

Graphic displaying the entrances of the Colosseum, detailing which entrances different groups of society used.

Dr. Erin Schroeder holds a gray cat in the exam room.

A clown anemonefish on a coral reef in Raja Ampat, Indonesia.

A young manatee swims alongside its mother. They will stay together for a couple of years.

Astronaut Sally Ride and fellow astronauts, including Kathy Sullivan and Bob Crippen, during training at NASA Johnson Space Center in 1984.

A horse waits to get a dental exam.

3D graphic of the Colosseum as it looked in 80CE, during the inaugural games.

Trabocco Mucchiola - restaurant Gli Ostinati, ingeniously anchored to the Trabocchi coast shore.

A glass frog perched on a leaf.

Sam Carlson and David Squibb go halibut fishing.

NASA Astronaut Sally Ride posing with her space helmet during her time in training as a mission specialist for NASA's STS-7 spaceflight.

David Attenborough stands at the coast in Southern England.