As the Arctic warms, will glaciers become a thing of the past? ![]() Is the economic benefit worth the environmental cost?Ī warming climate has helped cause this Alaskan glacier to retreat by nearly 2 miles over the past few decades. The once quiet forests of northeastern Alberta have been transformed by the boom in unconventional oil. The financial capital of China was always a major city, but over the past 30 years it has metastasized across the Yangtze River Delta, building skyscrapers over what were once farming villages. Once little more than a fishing village, this Middle Eastern megacity has blown up in recent years, even extending onto new land in the Persian Gulf. ![]() The city has exploded over the past few decades, sprawling into the desert-even as a growing population and worsening drought shrink nearby Lake Mead.
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