A global experiment tests how humanity could live across the solar system, by dropping volunteers into some of Earth’s most extreme environments. Nearly all tea comes from one plant, yet there are ...

Food, water and energy are resources that help maintain social and economic wellbeing. Their production/consumption isn't equally spread between countries. The UK has reserves of each resource type.

At 4,130 miles (6,650 km) long, the Nile in Africa is the longest river in the world. Some people consider the Amazon in South America to be longer. This is because the many hundreds of channels that ...