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Power

+ - More greenhouse gases from Biofuels

Submitted by ATestR
ATestR (1060586) writes "A Times of London article mentions a study published in the journal Atmospheric Chemistry and Physics measured the relative greenhouse gases produced by biofuels produced by two common organic sources, maise (corn) and rapeseed (canola).

From the article: "Rapeseed and maize biodiesels were calculated to produce up to 70 per cent and 50 per cent more greenhouse gases respectively than fossil fuels. The concerns were raised over the levels of emissions of nitrous oxide, which is 296 times more powerful as a greenhouse gas than carbon dioxide. Scientists found that the use of biofuels released twice as much as nitrous oxide as previously realized. The research team found that 3 to 5 per cent of the nitrogen in fertilizer was converted and emitted." The scientists taking the measurement estimated that this is at least 50% greater than similar pollutants produced by fossil fuels.

The article was republished on FoxNews.com"
Space

+ - Temp. difference observed between Sun's poles

Submitted by ATestR
ATestR (1060586) writes "From the Article (science.nasa.gov), one pole of the sun is cooler than the other. That's the surprising conclusion announced today by scientists who have been analyzing data from the ESA-NASA Ulysses spacecraft.

Measurements of the Northern Solar pole taken by Ulysses in 1994 and 1995 observed a temperature difference of 7 — 8 percent from the recent measurements taken of the Southern pole. Since the average Solar temperature has been measured to be constant during this twelve year period, the scientists invovled with the project are scratching their heads over the difference."

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