Located on a lonely mountain plain in Colorado ski country, the silver-rush-era town of Leadville holds secrets as deep as its tunnels and old mine workings.

Mountain snowpacks accumulate snow throughout the winter, building up stores of water that will supply communities across the American West throughout the long dry season.

UC Davis Professor Janet Foley takes a blood sample from a dog in Mexico as part of Rocky Mountain spotted fever prevention efforts. (Oscar Zazueta, Harvard) Rocky Mountain spotted fever is a ...