Sound travels about 4 times faster in water than in air.
408
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
Scientists aren't sure what color dinosaurs were.
312
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88