大象传媒

Back up to: A Perfect Planet

1. Humans

   5/5 Humans are changing our planet so rapidly, it鈥檚 affecting Earth鈥檚 life support systems.
2. Oceans

   4/5 How Earth's five oceans connect to form the largest ecosystem on the planet.
3. Weather

   3/5 How weather shapes the lives of animals across the globe.
4. The Sun

   2/5 How animals have come up with strategies to survive.
5. Volcano

   1/5 A look at how without volcanoes, there would be no life on Earth.