Stripping down science, the naked scientists.

The Naked Scientists. Hello, it's Sunday the 12th of February in 2012. Welcome to the

Naked Scientists. I'm Chris Smith and with me this week is Kat Arnie Hella Cat.

Hello. And this week we're looking at the tech that could turn waste heat into electricity and what that could mean for the

automotive as well as the energy and space industries. And in the news we'll hear

how disguising cancer cells as Salmonella could hold the key to producing

anti-cancer vaccines and a new drug that could knock the cause of

Alzheimer's on the head. So if you have any questions or comments for us,

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Now incredible as it sounds, over 70% of the energy released when you burn the fuel in your car gets wasted

and most of it flows out of the exhaust pipe in the form of heat that we then throw away.

And with average oil prices higher than they've ever

been, researchers are looking for ways to scavenge back some of that wasted energy to make some efficiency

savings. The approach they're taking is to use thermoelectric generators or tegs that can turn heat into

electricity. And this is something that the UK's National Physical Laboratory, NPL, that

Teddington is pioneering and one of their scientists Lori Winkler works on this technology.

...