If you want to put your video files online using HTML5 then it's recommended to have three different formats for a full browser support. Those formats are mp4, ogv and webm.
China has the largest population in the world, although the surface was only slightly smaller than the United States. Go through the daily Knowledge Check and build up your Dreevoo score.
On Friday, a solar plasma the size of a couple of Earths was unleashed from the Sun and the amazing display was captured by one of the NASA's sun observing spacecrafts.
The Milky Way is the galaxy that contains our Solar System. Its name "milky" is derived from its appearance as a dim glowing band arching across the night sky in which the naked eye cannot distinguish individual stars.
Asia is the world's largest and most populous continent. It has 49 countries and 5 disputed countries. Take this quiz and find out how good do you know capital cities of Asia.
