LiveScience: Although most Americans believe global warming's effects will take hold during their lifetime, they don't expect these changes to pose a serious threat to their way of life, according to a new poll.
A Gallup survey found that 54 percent of Americans believe global warming is already impacting the planet; another 3 percent think these effects will occur in a few years and 8 percent think these effects will occur in their lifetime. Meanwhile, 16 percent think global warming's effects will happen...