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Encryption

DMCA Exemption Time 151

jvillain writes "Contentagenda notes that the Copyright Office is taking submissions for exemptions to the DMCA. They do this every three years. There's a description of the six exemptions made last time to give you some ideas. So fire up the keyboard and let the Copyright Office know what needs to be changed. If you don't get in now, it'll be another three years before you can try again."
Earth

Dispelling Myths About Geomagnetic Reversal 158

UniverseToday has an interesting look at geomagnetic reversal, the process in which the Earth's magnetic poles trade places. The article cites known trends and recent studies to debunk doomsday myths and unsubstantiated claims about the process. One such study is attempting to model the earth's core with a 26-ton ball of molten metal. Another recently found evidence that the Earth has a second, weaker magnetic field. "We do know that this magnetic pole flip-flop has occurred many times in the last few million years; the last occurred 780,000 years ago according to ferromagnetic sediment. A few scaremongering articles have said geomagnetic reversal occurs with 'clockwork regularity' — this is simply not true."

Comment Re:Thorium reactors (Score 1) 171

So much work has gone into researching fusion because its fuel source--hydrogen--can be extracted from water. At least right now, water's everywhere. Uranium and thorium and any of the heavy elements for fission still have to be pulled from the ground in pretty limited areas--if those areas become politically volatile, are we any better off than using oil?

Fission reactors are better right now than burning hydrocarbons. But fusion is still worth researching.

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