Stories by Pola Lem

Urban growth poses big challenges in the 21st century

Water scarcity poses a greater risk of turmoil under global warming, the World Bank argues

Nearly all the power produced around the world depends on steady water supplies, which are imperiled by overuse and a changing climate

Warmer air leads to larger ice grains and more absorption of sunlight

Lobstermen are rushing to cultivate kelp as U.S. demand outstrips supply