What is sea level, is it better to walk or run in the rain, why is it dark at night, what is dark matter and many more questions explained in short videos in a real fun and intuitive way.
Daylight saving was first introduced by European countries during World War I, with much of the U.S. joining the party in 1918. The idea was that more hours of daylight would "conserve coal for the war effort.
You certainly don't see these kind of images every day, from tick close up, x-ray of a bat, to a high-tech micrograph of a zebrafish embryo. Check out some of the best images of the year.
The worst nuclear power plant accident in history, one that will affect the planet for thousands of years to come, watch on to find 10 interesting facts about Chernobyl.
All the Nobel Prize winners for 2013 have been announced. This is a short recap featuring individuals or groups who earned this annual and prestige recognition by the Nobel Prize committee.
