From 9-foot tall ostriches to albatrosses with gargantuan wingspans, here are some of the biggest birds in the world.

The natural marvels, which do everything from enabling acrobatic flight to insulating against Antarctic cold, continue to ...

Geologists from the University of Hong Kong (HKU) have made a breakthrough in understanding how Earth's early continents ...

King penguins live on many islands located slightly north of Antarctica. When they hatch, they weigh less than a pound (0.5 kg).