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Roger Revelle, an Oceanographer and professor at Harvard University, was the key global warming mentor for Al Gore. Revelle came to doubt his original position on man-made global warming many years later, stating that the true impact of carbon dioxide was not at all certain. He actually apologized that his research sent so many people in the wrong direction on global warming.

According to a new analysis report, Australia should welcome more than 250,000 migrants for a year, in order to increase Australia's economic and living standard. The Migration Council of Australia's analysis has a warning to us about the danger of decreasing the number of migrants coming to Australia. They show a deep positive impact on not only population growth, but also labor participation and some sectors, such as wages and incomes of employment depending on national skills and net productivity. "Migration is central to Australia's future prosperity", this is the conclusion of the impact of migration on key economic after almost a decade of study.

Here's something to consider for all you outdoor enthusiasts who use GPS to find your way through the wilderness: the network of satellites that your Garmin or Bushnell uses to pinpoint your exact location could begin to fail as early as next year!