The smell of freshly cut grass is actually a plant distress call.
31
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Hot water can freeze faster than cold water.
181
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A ball of glass will bounce higher than a ball made of rubber.
73