Can we make tailpipes that capture CO2?
Around the world, people are growing increasingly concerned about carbon dioxide (CO2) emissions. Certainly, climate change skeptics pose reasonable hypotheses that suggest changes in climate are merely a natural, global cycle — and we humans are just going to have to ride out. But the idea that humans are contributing to climate change is becoming more accepted. In response, scientists are thinking of ways to reduce humans’ greenhouse gas (GHG) emissions. One way is to create fuels that don’t produce carbon dioxide as a byproduct, like fossil fuels do. Biofuels like cellulosic ethanol made from corn or switchgrass still emit CO2 when burned for energy, but in far smaller amounts — as much as 85 percent less [source:
