Mills in the heart of Canada's timber industry have fallen quieter this winter as wildfires and infestations made worse by climate change have made vast tracts of once valuable forest into barren stands of dead trees.

While the airborne ants may be a nuisance, Moscow City Hall’s environmental protection department said they are not dangerous.

The iconic pine trees blanketing Jasper National Park may never be the same as a mountain pine beetle epidemic has infected nearly half of the park's pine forest.

Caterpillar infestation in Village

While their kin are declining worldwide, Canada’s largest amphibian, the bullfrog, is multiplying out of control in British Columbia — with some human help

At one point our entire red brick house was covered in the black caterpillars trying to reach the adjacent forest. The silk web-like nests began to appear on our trees in May and within weeks, the forests foliage was decimated.

The aggressive infestation that took hold in the Matanuska-Susitna Borough north of Anchorage in 2016 has now spread north, covering hillsides in the communities outside the park with rustred dead trees and reaching into park boundaries.

The birch leafminer ate its way through birches across Southcentral and Interior Alaska this summer. Hot and dry weather earlier in summer may have been optimal for them.

Shellfish growers in Willapa Bay in southwest Washington, the self-styled "Oyster Capital of the World," are alarmed by an invasion of potentially destructive nonnative European green crabs. Some are asking for an all-out trapping offensive to corral the invasive species.