By Heidi Harley

science / science - 1 day ago

The quantum gold rush

Even if you don’t recognize the name, you probably recognize the saguaro cactus. It’s the archetype of the cactus, a column from which protrude arms bent at right angles like elbows. As my husband pointed out, the cactus emoji is a saguaro: . In Tucson, Arizona, even the airport has a saguaro crop...