Balsa wood is classified as a hard wood!
41
The bark of an older redwood tree is fireproof.
65
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Most dust particles in your house come from dead skin.
48
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
