The rusty tussock moth has invaded the tundra in the Nome area, an infestation of the species not seen this far north before.

The Capital Regional District recently issued an alert sheet for Poison Hemlock (Conium maculatum).

Unusually high abundance of rusty tussock moth caterpillars in the Nome area.

"My family and I have been RV camping across Alaska for the last several years. This year, the mass amounts of dead spruce trees have been more apparent than any year prior."

The willow blotch leaf miner appears to be having a banner year in Whitehorse, likely because of hot, dry conditions in the city this spring.

Goldfish compete with native fish for food, potentially threatening an ecosystem.

Elodea was discovered in Alexander Lake in 2014 by researchers checking minnow traps. At the time, it covered 20 percent of the lake but now has spread to 90 percent.

Major sea lice epidemics have erupted on Atlantic salmon fish farms on Vancouver Island’s west coast over the last three months, according to industry, Fisheries and Oceans Canada and independent reports.

The worst-hit areas appear to be established neighborhoods with older spruce trees, especially in Turnagain and Spenard.

Her right hand protected by an old plastic bag, Donna Devlin carefully reaches into a shallow sewer basin in her driveway, and drags out a dead rat the size of her forearm. It's the latest casualty in a war that Devlin and her neighbours say they've been fighting, on and off, for two decades.

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.