New animations show centuries of expansion in three global cities.
A snapshot of Los Angeles's famously bustling airport.
Walkable suburbs and center city companies are dominating the tech scene.
Questioning the numbers behind the new ridership "record."
A new climate assessment sees more of the same killing heat this year, if not worse.
Expect unusual East Coast cold and West Coast heat to "remain in place through most of the remainder of March."
Very few people in Boston are uninsured, but there are huge swathes of them all over Dallas.
One man's quest to photograph pies atop horses, on satellite dishes, and in trees.
How U.S. cities stack up economically worldwide.
In public, at least.
This gigantic system ought to be good for the state's severe drought.
Where lie the country's steepest, most muscle-shredding streets?
After months of extremely dry weather, a Sacramento-area lake has pulled a massive disappearing act.
A subtle, but crucial policy tweak recognizes the importance of officer behavior pre-shooting.
People are leaving Minneapolis for Florida, Detroit for the suburbs, and Washington for New York.
They'll just get some additional training.
Transit agencies across the country are realizing they need to push past key commute times.
The results reveal the power of agglomeration as we've never been able to see it before.
Scientists at NOAA have updated the environmental catastrophe for today's media-hungry, GIS-loving audience.