Gypsy moth caterpillar
Sergey YeliseevGypsy moth larva, a pest in America’s forests, is even more pesky these days.

Pests are packing their metaphorical bags and heading for fresh starts nearer the North Pole as the climate warms around them.

Beetles, moths, fungi, and other pests that afflict forests and crops in the Northern Hemisphere are expanding their ranges northward by an average of 24 feet every day.

That’s according to British scientists who studied the records of infestations of 470 pests around the world since 1960 and measured the rate at which their ranges appeared to be shifting. They say their findings reveal a potential threat to food security posed by global warming.