Mega Chad

Lake Mega Chad

About 7,000 years ago, a vast lake spread hundreds of square kilometers across north-central Africa. Known to scientists as Lake Mega Chad, it covered more than 400,000 square kilometers at […]

Seal attack

Leopard seal attack

Gentoo penguins are the fastest underwater swimmer of all penguins. This one tries to flee for its life as a leopard seal bursts out of the water. Antarctic Peninsula coast, […]