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
Sound travels fifteen times faster through steel than through air.
134
Aluminum used to be more valuable than gold!
84
One barrel of petroleum holds 42 gallons.
20
Pure water (H2O) does not conduct electricity on its own.
46
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Nylon is made from coal and petroleum.
42