Earth Sciences

Why is there so much gold in west Africa?

Militaries that have taken power in Africa’s Sahel region—notably Mali, Burkina Faso and Niger—have put pressure on western mining firms for a fairer distribution of revenue from the lucrative mining sector.This post was originally published […]

Earth Sciences

Research reveals how Earth got its ice caps

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet’s history and require many complex processes working at once, according to new research.This post was originally published […]