Word: riversing
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Dates: during 2000-2009
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The answer lies in a paradox. No one argues that life on Earth would be possible without ecosystems, but the entire march of human progress has occurred against a backdrop of landscapes transformed from their natural state to suit the needs of agriculture and industry. Various societies have degraded huge...
Even more devastating is what we've done to the water cycle. So large is human demand for freshwater that many great rivers like the Yellow in China and even the Nile in Egypt sometimes dry up before getting to the sea. When diverted water is returned to waterways, it...
When millions across America celebrated the first Earth Day 30 years ago, our focus understandably was our own backyard. Our rivers were catching on fire, and our skylines were disappearing behind a veil of smog. America's remarkable environmental progress in the years since is powerful testament to our national...
One would think the creation of modern Los Angeles, which is what Hoover Dam allowed, would make that structure newsworthy. Actually, its historic significance is of more cosmic proportions. The first of the world's great dams, Hoover inaugurated an Age of Dams, which has spanned the past three-quarters...
From California to Maine, dam removal has begun. When four small diversion dams were taken off a Sierra Nevada stream called Butte Creek, record numbers of spring-run Chinook salmon--listed by the U.S. as a threatened species--rushed past their ruins to spawn. If the spring-run Chinook ends...