Wonderful World

South Africa:
The Vredefort Dome near Johannesburg is the site of the oldest and largest meteorite impact - the world's greatest known release of energy event, which caused devastating global change and led to major evolutionary changes, say some scientists.

Dating back 2023 million years, it provides critical evidence of the earth's geological history.

Egypt:
The desert floor of Wadi al-Hitan, or Whale Valley, south of Cairo is littered with fossils of the last whales known to have legs.

The remains reveal the transition of whales from land-based to the ocean-going mammals we know today.