Iron weighs more after it rusts.
68
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
Balsa wood is classified as a hard wood!
41
Sound travels about 4 times faster in water than in air.
408
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Scientists aren't sure what color dinosaurs were.
312