The article, The Heat Is On discusses the rising problem of global warming. Many scientists and experts on the subject agree that humans are causing this sharp rise in climate. Jerry Mahlman, the director of the National Oceanic and Atmospheric Administration's Geophysical Fluid Dynamics Laboratory at Princeton University, says there is little left to debate on the subject. "I'll take ten to one odds against anyone who says this is bogus," he remarks. He believes that the industrial output of greenhouse gases is responsible for the change. He is not alone with his views. New studies show that the planet is hotter than it has been in thousands of years. The basic idea of global warming is the earth's ocean, soil, plants, and animals naturally release carbon dioxide into the atmosphere. Along with other gases such as methane and water vapor, they trap solar radiation in, keeping a steady climate. Human activities in the last century appear to be adding more greenhouse gases to the atmosphere than are being naturally recycled. Nature essentially can't keep up with our pace of producing greenhouse gases. This increasing margin is what scientists believe to be the cause of global warming.
             Not only do scientists have ideas of how the earth's climate is rising; they have written and recorded proof. Since 1900, the earth's average temperature has increased by 1.1 percent. The warming is not evenly distributed either, changes of nearly 10°F have been recorded around Upper Canada, and northern Eurasia. This doesn't seem to be that much, but climate changes like these can cause drastic problems. These problems could include sea level rises, mountain glaciers receding, snow cover declines, coral reef destruction, and unpredictable weather patterns.
             Two scientists named Michael Mann and Raymond Bradley from Massachusetts looked back at the last 1000 years to estimate the ...