by Ian Skellern

How much time one could survive in space without a suit, whether there are truly 24 hours in a day, why dinosaurs cannot live in the present day (shock: ‘Jurassic Park’ is complete fiction), where most of the volcanos are, if there is a river beneath the Amazon, how long since it has rained on the driest place on earth, and what percent of the world’s species we have discovered (hint: not many), and much more more.

Here are 50 things you should know about the planet we live on.

50 awesome facts about earth