NTD Evening News Full Broadcast (Aug. 3)

A gunman is still at large in Montana, after killing four people at a bar on Friday morning. The suspect is an army veteran who lived next door to the bar. Authorities are warning that the man could return to the area.Rescuers are working to find survivors in Chile. That's after an earthquake caused underground passageways to collapse in the world's largest underground copper mine.The EPA proposed rolling back a 16-year-old scientific finding from the Obama administration that allowed the regulation of greenhouse gas emissions like CO2. Two guests join us to unpack the science and impacts.Do you ever feel an uncontrollable urge to move your legs when trying to fall asleep? A neurologist sheds light on what could be a case of restless legs syndrome.And, ever wonder why potato and tomato have such similar names? Well, scientists have uncovered the modern potatoes ancestor might just be a tomato. Find out how that cross-pollination spills over in the spuds we buy now.