Earths inside

What would happen if I dug a hole through the earth and jumped in...

Digging a hole through the center of Earth is impossible with current technology and for many other reasons. However, let's do a thought experiment...
Sloth

Why are sloths so slow?

The first piece of the puzzle to understanding why sloths are so slow is their low-calorie folivorous (mostly leaves) diet. Many other folivorous animals...
Mexican Fruit Fly

Do insects get fat?

A Florida entomologist in the 1960s found that he could turn about half of a mosquito's body weight into fat if he handfed it...

Why is hydrogen peroxide sold in brown bottles?

Hydrogen Peroxide is sold in brown (or dark) bottles because it can decompose into water if it's exposed to light. Opaque bottles keep the...
Tickling Feather

Why can’t I tickle myself?

According to neuroscientists at the University of London, there are two parts of the brain responsible for how tickling is processed. These regions work...

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