Body parts Facts Wisdom teeth serve no purpose. They’re left over from hundreds of thousands of years ago. As early humans’ brains...
Solar System The Solar System formed around 4.6 billion years ago. Some of the fastest meteoroids can travel through the solar system...
Rats breed so quickly that in just 18 months, 2 rats could have created over 1 million relatives. The blue whale can...
Humans get a little taller in space because there is no gravity pulling down on them. Rabbits and parrots can see behind...