A wave of infrastructure projects is coming as federal funds pour in. Cities and everyone in them needs to know the risks from the cheapest, most popular repair method and how to avoid harm.
Natural gas has been marketed for decades as a clean fuel, but a growing body of research shows that gas stoves can contribute significantly to indoor air pollution, as well as climate change.
A physicist explains how atoms arrange themselves into molecules – and how scientists are able to image these tiny bits of matter that make up everything around you.