Is Mankind Warming the Earth?

Proud To Be Canadian .ca:

"Ten years ago, Danish researchers Henrik Svensmark and Eigil Friis-Christensen first hypothesized that cosmic rays from space influence the Earth’s climate by effecting cloud formation in the lower atmosphere. Their hypothesis was based on a strong correlation between levels of cosmic radiation and cloud cover – that is, the greater the cosmic radiation, the greater the cloud cover. Clouds cool the Earth’s climate by reflecting about 20 percent of incoming solar radiation back into space.

The hypothesis was potentially significant because during the 20th century, the influx of cosmic rays was reduced by a doubling of the sun’s magnetic field which shields the Earth from cosmic rays. According to the hypothesis, then, less cosmic radiation would mean less cloud formation and, ultimately, warmer temperatures – precisely what was observed during the 20th century.

If correct, the Svensmark hypothesis poses a serious challenge to the current global warming alarmism that attributes the 20th century’s warmer temperatures to manmade emissions of greenhouse gases."

I've always had a gut feeling that celestial conditions will be found to be much more significant for global temperature trends than carbon-based air pollution.