Martin Luther King Jr. Day  (officially  Birthday of Martin Luther King, Jr. ,  and sometimes referred to as  MLK Day ) is a  federal holi...

Some other examples: It is known that the sky is blue / The sky is known to be blue It was thought that the Earth is flat   / The Eart...

Have you ever wondered why dogs put their heads out of car windows?  Watch this video and learn more about this common behaviour. Loading…

  Do you play Minecraft? Check out this gigantic city built by 19-year-old Duncan Parcells ! Loading…

We go inside the most exclusive school for nannies in the world. They are not just trained to cook and sew, they also learn self-defense tec...