.Unit 22 Lesson 1 Global WarmingCan we take the heat?In the last few decades, scientists have reached consensus and reported that human beings are causing changes in the Earths climate something previously seen as beyond our control. They claim that in the last 50 years, gases pumped into the Earths atmosphere by the factories and vehicles have been speeding up the process of global warming and affecting our climate. Looking ahead, scientists believe that global warming could be one o
