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A new study indicates all rides are not created equally.
Gorgeous, remote national parks can often be reached by train or bus.
Nearly one in seven kids in the world live in areas where outdoor air pollution is at least six times higher than international guidelines.
The Otto truck transported 51,744 cans of Bud on the 125-mile trip from Fort Collins, Colorado, to Colorado Springs.
Because nothing says 'Murica more than owning as many gas-guzzlers as you can.
Donald Glover's new FX show is a perceptive picture of America's growing problem of poverty and sprawl.
Miami Beach gets all the attention for its increased chronic flooding, but poorer, inland neighborhoods are being hit hard too.
The UNEP calls for countries to use at least 20 percent of their transit budgets for bike lanes and safe sidewalks to encourage walking and biking over driving.