New research shows electric cars emit more greenhouse gases than hybrids in some states.
While it certainly presents challenges, climate change also opens doors to new opportunities for innovation and development in technology — including big batteries.
Are all green cars created equal? It’s a complicated question, but Climate Central found the answer.
Congress helped bolster the corn ethanol business in Iowa by mandating the Renewable Fuel Standard in 2005. But scientists are concerned about the unexpected consequences of putting more of Iowa's land into corn production.