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Welcome.

This is the show where we bring science.

What that essentially means is.

Discovery is,

advances, research, technology, unbelievable.

Without further ado, this is the naked scientist.

Hello, welcome to this week's naked scientist.

This is the program that brings you the latest breakthroughs in science, technology and medicine.

I'm Chris Smith. And this time, how science can help cut down the carbon footprint of concrete,

designer antibodies to introduce cancers to immune assassins and the caterpillars that

sense static charge on wasp wings so they can beat a hasty retreat.

From Cambridge University's Institute of Continuing Education, this is the Naked Scientists. Up first this week making cement is one of the world's largest

single contributors of greenhouse gas emissions. The iron and steel industry is also a really big

player owing to the energy it consumes. So the announcement this week by Cambridge engineers that

they've developed a way to use old waste concrete to remove impurities in the still-making

process and at the same time produce new cement looks like a huge game changer.

Essentially, they're more than halving the total energy cost. The work, which

has just been published in the journal Nature, will hopefully transform the industry. The

author Cyril Dunant is at the University of Cambridge's Department of Engineering.

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