
The Secret Sex Lives of Crop Plants
Jan 14, 2016 explains why humans eat only about 200 of the world's 400,000 plant species.
John Warren is Professor of Botany at Aberystwyth University and the author of The Nature of Crops.
Jan 14, 2016 explains why humans eat only about 200 of the world's 400,000 plant species.
Nearly three months after Russia launched its invasion, Western countries appear more committed than ever to Ukraine’s defense, and, in some quarters, to Russia’s defeat. We asked PS commentators what outcome the West, Russia, and Ukrainians themselves can realistically expect.