NOVA

自然 · 历史

S36 E14 Last Extinction (Megabeasts' Sudden Death)

本集简介

Scientists propose a radical new idea of what killed off mammoths and other large animals at the end of the Ice Age.

上一集

2009/03/24 S36 E13

An acclaimed photographer teams up with scientists to document the runaway melting of arctic glaciers.

下一集

2009/04/07 S36 E15

Doctors' Diaries (1)

Seven doctors, 21 years... Saving lives is only part of the story. Part 1 of 2.

当前季