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Every day, all over the world, groups of people meet together. They meet to talk about important issues. Business people meet about ways to improve their companies. Teachers meet about new ways to tea...

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Steve: Compare and contrast. Rennie: Well I would be happy to do that Steve. You see your regular singularity is something you would find deep inside a black hole. What happens with a black hole is y...

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So this is HIV. It's a typical retrovirus, meaning that it has an outer envelope. And in the center, it has two copies of RNA, as well as an enzyme, here in blue. That's reverse tran...

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Janis Joplin.She was one of the greatest white blues-influenced rock singers of her time.Her intense and emotional voice has become one of the most famous in American popular music.(MUSIC: "Ball and C...

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JAMES CAMERON knows how to make a splash. Literally. The director of “The Terminator”, “Titanic” and “Avatar” plunged into the Challenger Deep of the Mariana Trench, 500km (300 miles) from Guam. T...

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Steve: Right, I mean Chernobyl's terrible thing but that is not a worldwide spread, what got spewed out there. Volk: Yeah, the winds did spread it into the northern Europe and so that was very bad, b...

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I’m William D. Phillips, Bill Phillips. I won the Nobel Prize in 1997 – Nobel Prize in Physics – and I make gases of atoms really, really cold. Time is one of the most important things ...

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BECAUSE of the September 2001 attacks, the New York Police Department has become a sophisticated counter-terrorism agency. In the decade since then the NYPD has increased the number of detectives on a...