Climate change deniers often argue that the climate change we?re seeing now is just part of Earth?s natural cycle, and isn?t being caused by humans. But new research suggests that climate change is happening faster than it has at any other time in our planet?s history ? and scientists are worried. Scientists at the University of Bristol recently took a closer look at past periods of climate change in an effort to compare them with what?s happening today, and to investigate whether Earth has ever seen the same level of rapid ocean acidification that?s currently beginning to threaten marine life worldwide. Read More at www.mtv.com