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

Lightning strikes Earth about 100 times every second.

Fact #2445 · Nature

A circumzenithal arc is a rainbow-colored arc near the zenith (directly overhead) — it's the 'smile in the sky.'

Fact #7435 · Nature

Some trees can communicate with each other using underground fungal networks.

Fact #1954 · Nature

Some people survive being struck by lightning multiple times.

Fact #3080 · Nature

In 1908, a massive explosion flattened forests in Siberia in what is known as the Tunguska event.

Fact #772 · Nature

Aerogel is the world's lightest solid, so insulating it can hold a flower over a blowtorch.

Fact #3328 · Nature

Lightning strikes the Earth about 100 times per second.

Fact #3397 · Nature

A bolt of lightning is about one inch wide but can be miles long.

Fact #2614 · Nature