Sen. Bernie Sanders (I., Vt.) called out opponent Hillary Clinton for her sudden change to come out against fracking during Thursday night's debate.
"When you were secretary of state you also worked hard to expand fracking to countries all over the world," Sanders said.
In the March 6 CNN debate, Clinton came out against fracking. Clinton listed limits that she would put on fracking: limit drill wells' emissions of methane and other drilling byproducts, require companies to disclose what is in drilling fluids, and give local and state governments the option to push out drilling companies. She also called for the end of fracking on public lands.
During her time at the State Department, Clinton urged foreign countries like Bulgaria to give fracking another try. Clinton said that fracking was "part of a broader push to fight climate change" and that it would boost global energy supply.
Earlier in the debate, Clinton said that she wanted to increase the number solar panels that are used throughout the country.
"We have got to lead the world in transforming our energy system. Not tomorrow but yesterday," Sanders said. "And what that means, Wolf, it means taking on the fossil fuel industry."