Mental Floss

NATURE





An aerial view of Australia's Heart Reef.

From an island infested with snakes to a vault holding a very special secret recipe, these dangerous, mysterious, or otherwise forbidden places are off-limits to the public.

Michele Debczak




pjmalsbury/iStock via Getty Images

They look docile and sluggish in those popular nature documentaries, but hippopotamuses have a violent side.

Stan Shunpike




Grass: nature's torture device.

The inviting green stuff is supposed to bring us closer to nature. Instead, grass creates a stinging, itchy sensation. What gives?

Jake Rossen