Balsa wood is classified as a hard wood!
41
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
Your brain is 80% water.
525
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
One ragweed plant can release as many as one billion grains of pollen!
51
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Nylon is made from coal and petroleum.
42