Built from carbon nanotubes, the material reportedly absorbs 99.995 of light, and its creators say it's 10 times blacker than any other existing material.
02-01-1982. David Letterman retired yesterday after 33 years in the business.
Previously believed to be only man-made, a natural example of a functioning gear mechanism has been discovered in a common insect - the plant-hopper Issus.
The ancient Babylonians used a number system with base 60 (sexagesimal)
