IF YOU WANT a breathtaking display of the grandeur of nature’s past, visit Zion. This national park in south-western Utah, with its striking red canyons and craggy peaks, is one of America’s most ...
Beneath Kenya, the African tectonic plate is splitting in two. That cleave creates hydrothermal vents, ripe for harnessing geothermal energy. This is a renewable source of energy derived from hot ...