Scarcity increases perceived value — items are rated more desirable when described as rare.

A teaspoon of neutron star material would weigh billions of tons.

Fact #1679 · Science

The door-in-the-face technique uses large requests to gain smaller agreements.

Fact #1502 · Science

Earthquakes occur when tectonic plates shift along faults.

Fact #813 · Science

The Earth's atmosphere becomes colder in the stratosphere before warming again.

Fact #227 · Science

The Earth's outer core is liquid metal.

Fact #250 · Science

Heatwaves can pose serious risks to human health.

Fact #821 · Science

The Earth's interior is layered into crust, mantle, and core.

Fact #338 · Science

Some species of jellyfish are biologically immortal under certain conditions.

Fact #159 · Science