Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
A ball of glass will bounce higher than a ball made of rubber.
73
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The left ear is more responsive to words of love and emotion whispered into it than the right.
40