NOVA

自然 · 历史

S29 E12 Fireworks!

本集简介

Pyrotechnists use hi-tech firing systems and ancient alchemy to create dazzling fireworks displays.

上一集

2002/01/22 S29 E11

Neanderthals on Trial

Are Neanderthals our ancestors or an evolutionary dead end?

下一集

2002/02/05 S29 E13

Secrets, Lies and Atomic Spies

NOVA looks back to the 1940s, when American spies passed their country's deepest scientific secrets to the Soviets.

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