- Mapping is older than writing.
- Recycling one glass jar saves enough energy to watch TV for 3 hours.
- Some dinosaurs had tails over 13m (45 feet) long.
- Sound travels 15 times faster through steel than air.
- Greek mathematics developed from around the 7th century BC, producing many important theories thanks to great mathematicians such as Pythagoras, Euclid and Archimedes..
reload more facts | visit cool facts
add this widget to your website