Nanotechnology involves manipulating matter at scales of 1–100 nanometers — smaller than most viruses.

Hot water can freeze faster than cold water under certain conditions — this is called the Mpemba effect.

Sound travels about four times faster in water than in air.

The Phoenicians were skilled sailors and traders.

The first computer bug was an actual bug — a moth found trapped in a Harvard Mark II relay in 1947.

The last guillotine execution happened in 1977.

The world's longest cave system, Mammoth Cave in Kentucky, has over 660 km of mapped passages.

Your brain can store the equivalent of millions of gigabytes of information.

Social media's algorithmic feeds are optimized for engagement — which often means prioritizing emotionally charged content.