The smell of freshly cut grass is actually a plant distress call.
31
Pumice is the only rock that floats on water.
14
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Research indicates that plants grow healthier when they are stroked.
173