Chesley Bonestell, “The Exploration of Mars” (1953), oil on board, 143/8 x 28 inches, gift of William Estler, Smithsonian National Air and Space Museum. Reproduced courtesy of Bonestell LLC.

Countering a Blooming Problem

January 4, 2015

Blooms of toxic algae, nourished by nitrogen and phosphorus leaching into waterways, are increasingly common across much of the United States, according to a recent report described here. In Issues, a trio of experts has explained how better managing use of these nutrients—in agriculture and in urban areas—can yield environmental, socioeconomic, and national security benefits, especially as atmospheric warming drives climate change.