Plato's allegory of the cave describes prisoners who mistake shadows on a wall for reality.

Lahar — volcanic mudflow — can travel faster than a person can run and extends the danger zone far beyond the eruption.

Tahini, made from sesame seeds, contains more calcium per tablespoon than a glass of milk.

Some people survive being struck by lightning multiple times.

Lightning can heat air hotter than the surface of the Sun.

The sandbox tree ejects its seeds at 150 mph when the seed pods explode.

Volcanic lightning is caused by static electricity from ash particles colliding during eruption.

Mangroves provide critical coastal protection, reducing storm surge and wave impact during hurricanes.

The Carboniferous period had vast swamp forests.