Plants can sense gravity through specialized cells called statocytes containing heavy starch grains.

The Earth's atmosphere blocks much of the Sun's harmful radiation.

Fact #113 · Science

Volcanic eruptions can produce lightning within ash clouds.

Fact #844 · Science

The Milgram obedience study examined responses to authority.

Fact #1467 · Science

Fossils are formed when remains are preserved in rock over millions of years.

Fact #631 · Science

The Earth's atmosphere is composed mostly of nitrogen and oxygen.

Fact #80 · Science

Time moves slower in stronger gravitational fields.

Fact #1794 · Science

The polio vaccine drastically reduced cases worldwide.

Fact #1193 · Science

The Müller-Lyer illusion makes lines of equal length appear different.

Fact #1464 · Science