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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...

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What do you think of when you consider witchcraft? Strange powers from the spirit world? Strange people who can do things that ‘normal’ people cannot do? Magic? Where you live may influence your answe...

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Steve: I figured that probably had something do with it.$#10320#$10320#$ Why don't you tell everybody what the bigness is about [in] 2009.$#10320#$10320#$ Rennie: Well sure.$#10320#$10320#$ It's actu...