Imaginary numbers — square roots of negatives — are essential to quantum mechanics and electrical engineering.

The discovery of DNA’s structure occurred in 1953.

Fact #1199 · Science

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

Fact #1807 · Science

The MRI scanner improved internal medical imaging.

Fact #1587 · Science

The vaccination syringe improved medical delivery methods.

Fact #1576 · Science

Stem cell research explores regenerative medicine.

Fact #1218 · Science

The smallpox vaccine led to the global eradication of smallpox.

Fact #1197 · Science

The Cavendish experiment measured the density of the Earth using lead spheres.

Fact #994 · Science

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

Fact #1502 · Science