Past Dr. Who companion Sarah Jane Smith due to return in the new series

"Ex-Doctor Who companion Sarah Jane Smith will return in the new series of the sci-fi show, it was revealed as the Doctor's new costume was unveiled."

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Realistic Time Machine? New design could forgo exotic ingredient

Physicist Amos Ori of the Technion Israel Institute of Technology in Haifa has come up with a potentially more practical time machine design. Unlike most previous proposals, this one requires only normal matter and the vacuum known to exist in space, says Ori.

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Military's Energy-Beam Weapons Delayed

For years, the U.S. military has explored a new kind of firepower that is instantaneous, precise and virtually inexhaustible: beams of electromagnetic energy.

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Lexmark Z515 $15 at Wal-Mart

When I was at my local Wal-Mart today, I saw that they had Lexmark Z515 printers for only $15.00. I couldn't pass it up. Its cheaper then new inkjet cartridges. In fact on their website they still want $32.86 for them. I don't know if they are this cheap everywhere, but its worth a look. Great Deal!

Another Stonehenge found in Russian

A 4 thousand years old construction found in Russia

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The Science Behind Fireworks

How pyrotechnicians use the laws of physics in those dazzling effects. As you ooh and aah at the dazzling explosions of a fireworks display, there are three things going on that you probably wouldn�t guess...

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The Mystery of Time Travel

When it comes to the nature of time travel, physicists are pretty much at a loss, but some theorists think that has to change.

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Ants cloning themselves

The males in the ant species Wasmannia auropunctata reproduce by making copies of themselves.

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Einstein's theory gives weight to idea of time trave

When H.G. Wells published his epochal novel "The Time Machine" in 1895, time travel was outlawed by the laws of physics. But that was Newtonian physics, and everything changed 10 years later with Albert Einstein's theory of relativity.

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