It’s that time of year again, when lots of U.S. residents are blasting the heat in their homes and still freezing cold.
When a pipe bursts or a gas line starts hissing, you do not want to be standing in ankle‑deep water or smelling gas while you ...
How much fresh water is in the United States? It's a tough question, since most of the water is underground, accessible at varying depths. In previous decades, it's been answered indirectly from data ...