Balsa wood is classified as a hard wood!
41
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Sound travels about 4 times faster in water than in air.
408
Nearly 50% of the world's scientists are assigned to military projects.
71
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The storage capacity of human brain exceeds 4 Terrabytes.
140