Both companies have made big commitments to prove their eco-friendliness, but there's still debate over whether they will put the environment ahead of their bottom lines.
After a federal appeals court blocked a permit for the Mountain Valley Pipeline, the state's Department of Environmental Protection is changing standards to subvert the ruling.
An inventive toolkit created by a team at the University of Texas–Austin does not need much more than a cell phone, a 3-D-printed box, and a few chemical solutions.