The smell of freshly cut grass is actually a plant distress call.
31
Liquid TIDE laundry detergent glows under a blacklight.
96
A cubic yard of air weighs about 2 pounds at sea level.
31
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The bark of an older redwood tree is fireproof.
65