Once upon a time there was enough water in the Colorado for everyone to have a share of its bounty. Not anymore. A journey down the once-mighty river reveals the future of the American West in a changing climate.
We value our ancient forests in so many ways: for wild creatures, for spiritual renewal, for profitable timber. But science and economics may be converging to make forests a vital asset in the fight against global warming.
Think of Europe and what comes to mind is the soaring euro and gleaming cosmopolitan cities. But in the remote hills of Transylvania, a nearly medieval way of life prevails. Can it survive its encounter with modernity?
Africa is once more plagued by malaria, and an international debate rages over the remedy. Some dream of a vaccine, others urge a return to DDT. In Kenya, scientists have found creative answers hiding in plain sight.
While October's California fires grabbed the headlines, those in the Rocky Mountain West were even worse. In his dispatch from Montana, the author ponders a burning land in the era of global warming.
Even sober energy experts wonder if Alberta has gone mad as the province tears up a vast wilderness to get at the world's dirtiest, most expensive -- and perhaps last -- reserves of oil.
Inspired by Leonardo DiCaprio's new documentary, The 11th Hour, we asked a few great minds to get past the gloom and doom and tell us how to save the world.
Nanotechnology is poised to transform our lives: miraculous cancer treatments, perfect sunscreens, a super new power grid. One problem: Nobody knows if this multi-billion-dollar enterprise is actually safe.