Balsa wood is classified as a hard wood!
41
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One barrel of petroleum holds 42 gallons.
20
The only letter not appearing on the Periodic Table is the letter "J".
180
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6