Al Gore Must Be In the Solar System [Dan Collins]
Nuke him from orbit . . .Ã‚Â
Every day, scientists hoping to see an increase in solar activity train their instruments at the sun as it crosses the sky. This is no idle academic pursuit: A lull in solar action could potentially drive the planetÃ¢â‚¬â„¢s temperature down, or even prompt a mini Ice Age.
For millennia, thermonuclear forces inside the star have followed a regular rhythm, causing its magnetic field to peak and ebb, on average, every 11 years. Space weathermen are watching for telltale increases in sunspots, which would signal the start of a new cycle, predicted to have started last March and expected to peak in 2012. Ã¢â‚¬Å“When the sunÃ¢â‚¬â„¢s active, itÃ¢â‚¬â„¢s a little bit brighter,Ã¢â‚¬Â explains Ken Tapping, a solar researcher and project director for CanadaÃ¢â‚¬â„¢s National Research Council.
So far, Tapping reports no change in the magnetic field strength, as measured by radio telescopes. On the more positive side, last month NASA reported a small, earth-sized sunspot with a magnetic field pointing in the opposite direction from those in the previous cycle; qualities that designate the spot as a signal of a new upturn in activity. At the solar maximum, scientists expect to see between 75 and 150 such sunspots per day.
Tapping oversees the operation of a 60-year-old radio telescope that he calls a Ã¢â‚¬Å“stethoscope for the sun.Ã¢â‚¬Â Recent magnetic field readings are as low as heÃ¢â‚¬â„¢s ever seen, he says, and heÃ¢â‚¬â„¢s worked with the instrument for more than 25 years. If the sun remains this quiet for another a year or two, it may indicate the star has entered a downturn that, if history is any precedent, could trigger a planetary cold spell that could bring massive snowfall and severe weather to the Northern Hemisphere.
The last such solar funk corresponded with a period of bitter cold that began around 1650 and lasted, with intermittent spikes of warming, until 1715. While there were competing causes for the climatic shiftÃ¢â‚¬â€including the Black DeathÃ¢â‚¬â„¢s depopulation of tree-cutting Europeans and, more substantially, increased volcanic activity spewing ash into the atmosphereÃ¢â‚¬â€the sunÃ¢â‚¬â„¢s lethargy likely had something to do with it.
Why do todayÃ¢â‚¬â„¢s men run from commitment Ã¢â‚¬â€ indefinitely delaying settling down in a marriage they take seriously, and having kids? Dr. Helen Smith asks whether they are indeed pampered eternal adolescents more interested in exploding toilets and video games than real life, or if they are simply making a logical choice when Ã¢â‚¬Å“the reward for being an adult in our society is so low, especially for men.Ã¢â‚¬Â