Why we need the explorers

In tough economic times, our exploratory science programs - from space probes to the LHC - are first to suffer budget cuts. Brian Cox explains how curiosity-driven science pays for itself, powering innovation and a profound appreciation of our existence. Talk recorded 19 April 2010.

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For the first time, we saw our world, not as a solid, immovable, kind of indestructible place, but as a very small, fragile-looking world just hanging against the blackness of space.