In non-Euclidean geometry, the angles of a triangle can sum to more or less than 180 degrees.

Quantum particles can influence each other instantly across distance.

Fact #1797 · Science

In 1954, a scientist allowed himself to be bitten by mosquitoes to study malaria transmission.

Fact #997 · Science

Time moves slower in stronger gravitational fields.

Fact #1753 · Science

The use of microscopes improved understanding of pathogens.

Fact #1231 · Science

Dark matter is believed to make up most of the universe’s mass but has not been directly observed.

Fact #1594 · Science

In 1996, Dolly the sheep became the first cloned mammal from an adult cell.

Fact #1019 · Science

Vaccines train the immune system to recognize pathogens.

Fact #64 · Science

Antiretroviral therapy transformed HIV from fatal to manageable.

Fact #1208 · Science