MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The smell of freshly cut grass is actually a plant distress call.
31
The bark of an older redwood tree is fireproof.
65
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6