Nanotechnology deals with materials at the scale of 1–100 nanometers — a human hair is about 80,000–100,000 nm wide.

Your brain can simulate future events before they happen.

The Chunnel carries both passenger and freight trains.

Roughly 80% of people will experience back pain at some point in their lives.

The Zeigarnik effect explains why unfinished tasks are often remembered better.

The internet routes data in 'packets' — small chunks that may take different paths and reassemble at the destination.

The Tour de France covers approximately 3,500 km over 21 stages and is widely considered the hardest endurance race in sport.

Drones (UAVs) were originally developed for military reconnaissance in the 1910s.

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