The smell of freshly cut grass is actually a plant distress call.
31
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
Balsa wood is classified as a hard wood!
41
In zero gravity, a candle's flame is round and blue.
16
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Billions of neutrinos pass unnoticed through your body every second.
6