The question of how to reduce the pollution that causes global warming is now a hot topic since new carbon limits were announced by the EPA earlier this month. Those proposed rules aim to reduce national carbon emissions from existing power plants 30 percent by the year 2030. In Alabama, the goal is 27 percent. The boom in natural gas could help, as could investments in renewable energy like wind and solar. Another method is what’s called “carbon capture.” Dr. Jason Bara is a university of Alabama assistant professor studying chemical solvents to be used in carbon capture. He says the idea is to use the technology on a coal or natural gas-fired plant. Sources: Alabama Public Radio, WVUA TV