Planet EarthWhy aren’t people at the equator thrown off into space by centrifugal force since the Earth is rotating at a high speed?
Outer SpaceWhy are astronauts weightless in the space? Is it because they are beyond the pull of gravity?
Planet EarthWhy the composition of the atmosphere is so specific and steady with 21% oxygen and 78% nitrogen?
Living CreaturesWhy do ants touch each other with their heads when they meet? Why do they walk in a file one behind another?
Science and TechnologyWhat shape do raindrops have? Are they tear-shaped like normal droplets of water?
Outer SpaceDo other planets experience total solar eclipse like the one we witnessed on July 22, 2009?
How things workWhy the entire surface of the passenger planes is not painted over? Why the nose of the plane is black?
