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Welcome to Science Talk, the weekly podcast of Scientific American, posted on June 24th, 2010.

I'm Steve Mursky.

This week on the podcast, today, the modern theory of the early universe, we all know,

is that the first squillionth of a second, the universe was half matter, half antimatter,

and then gradually matter wins out, so to speak, and we end up with much less anti-batter.

Now, by that light, Dirac conceived half the early universe in his head.

That's physicist and writer Graham Farmelow.

He's the author of the acclaimed biography The Strangest Man,

the story of legendary theoretical physicist Paul Dirac.

Farmelow is a senior research fellow at London's Science Museum and his adjunct professor

of physics at Northeastern University here in the U.S.

His book has won the 2010 Costa Biography Award and the Los Angeles Times Book Prize

in the Science and Technology category.

Farmelow is spending the summer doing research at the Institute for Advanced

Study at Princeton. He was kind enough to drop by the Scientific American offices on June

18th to talk about Dirac. Here's part one.

Who was Dirac?

...