The Ko'olau volcano in Hawaii created Oahu — but most of it has since subsided below sea level.

Positive reinforcement can strengthen certain behaviors.

Fact #964 · Science

Lightning can heat the air it passes through to temperatures hotter than the surface of the Sun.

Fact #5 · Science

The Yellowstone supervolcano is one of the largest volcanic systems in the world.

Fact #836 · Science

The 2011 Tohoku earthquake triggered a major tsunami in Japan.

Fact #817 · Science

Energy and mass are interchangeable.

Fact #1771 · Science

Tardigrades can survive extreme radiation, freezing, and even space.

Fact #1813 · Science

Plants release oxygen during photosynthesis.

Fact #272 · Science

The flashlight provided portable electric light.

Fact #1579 · Science