That's what two Russian solar physicists are doing, betting $10,000 against a British climate expert who says the planet's surface temperature will increase in 10 years. They say the temperature will fall -- because of sunspots.
The pair, based in Irkutsk, at the Institute of Solar-Terrestrial Physics, believe that global temperatures are driven more by changes in the sun's activity than by the emission of greenhouse gases. They say the Earth warms and cools in response to changes in the number and size of sunspots. Most mainstream scientists dismiss the idea, but as the sun is expected to enter a less active phase over the next few decades the Russian duo are confident they will see a drop in global temperatures.
We shall see.