A new report by the EPA found that the majority of rivers and streams can't support healthy aquatic life.
And what if it's not other people who live there?
The Cosmic Microwave Background, or CMB, was imprinted on the sky when the universe was young.
A new app from Texas researchers shows how clouds of lung-pummeling ozone move through Houston neighborhoods.
The light of urban development seen from space can tell us much about the shape of the world's economy.
Enrollment is declining, and charter schools are the most likely culprit.
Maps highlight which teams have the biggest reach.
If your hometown's been shot by astronaut/prolific shutterbug Chris Hadfield, it's probably viewable on this interactive map.
Google Street View goes to its most extreme destinations yet: 4 of the planet's highest mountains.
Baltimore gets an edible fantasy transit system.
Inside a beautiful new collection of "maps you shouldn't trust yet cannot help but fall for."
Looking back over the history of the crowdsourced digital street map, a familiar pattern emerges.
"Everybody's an informant."
A "classic example of copy-pasting a first world solution in an emerging economy."
Two years after Fukushima, some American nuclear power plants are still having scares.
A visual reminder of where most pollution in our cities comes from.
Many low-income homes and apartment buildings are still dealing with significant damage.
Texas cities account for three of the top 10 metros, and nearly one in five SXSW acts hail from Texas.
Allan Calhamer's brilliant geographic legacy.