SPRING rains brought a to Afghan farmers this year, and the opium poppies were safely brought in because US president Barack Obama withdrew troops he had sent to . But the beleaguered country can’t rest easy. The Ug99 wheat rust, a virulent fungus that wipes out entire crops, is poised to cross the border from Iran.
Fungal spores have been spreading on the wind from Uganda, where the disease was first discovered in 1999. They reached the wheat fields of Iran two years ago, prompting scientists to warn that millions in Asia were at …
