Latest References
Earth Day: When is it and why do we celebrate it?
Earth Day is an annual global event on April 22 that celebrates Earth and raises public awareness about the environment.
Antarctica: Facts about the southernmost continent
Antarctica is the coldest, windiest, and driest continent. Because so little moisture falls as rain or snow, Antarctica is classified as a desert.
Primates: Facts about the group that includes humans, apes, monkeys and other close relatives
Discover interesting facts about the origins of primates, what they eat, and if they have thumbs.
Climate change: Facts about our warming planet
Discover important facts about what climate change is, what's causing it, and what we can do to stop it.
Flu: Facts about seasonal influenza and bird flu
Learn interesting facts about the flu, a viral infection that targets the respiratory system.
Mars: Facts about the Red Planet, its moons, and possibilities for life
Discover interesting facts about Mars, its moons, its atmosphere, and the possibilities of life.
Ancient Egypt: History, dynasties, religion and writing
The rich history of ancient Egypt involves power struggles, amazing feats of engineering, advances in writing and art, and more.
Ancient Egypt: Facts about the ancient civilization known for its pyramids, mummies and pharaohs
Discover interesting facts about ancient Egypt's pyramids, mummies and pharaohs.
