To cast doubt on the idea that Trump campaign officials actively cooperated with Russians, it points to the Trump transition teamís attempt to establish a back-channel with the Russian government to suggest there was no existing relationship by that point.
Photographer: Mike Coppola/Getty Images
An explosion and asphalt fire at a Wisconsin oil refinery sent huge plumes of smoke into the air that pollution experts said almost certainly contained large amounts of toxins, posing a serious health risk to those living downwind.
Asphalt is a petroleum product that when burned emits chemicals in gaseous form and small particles that can linger long after the smoke dissipates, said Wilma Subra, a chemist with the Louisiana Environmental Action Network who has examined past refinery accidents.
The gases include so-called volatile organic compounds, or VOCs, which can cause symptoms ranging from dizziness, breathing problems and nausea to liver damage and cancer, depending on the level and length of exposure, according to the U.S. Environmental Protection Agency..