Swimming at the lake is not recommended at the moment, despite a major purification process in 2017.

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.

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.

A new study has found permafrost at outposts in the Canadian Arctic is thawing 70 years earlier than predicted.

Potentially harmful blue-green algae has increased in lakes over the past week.

Drought levels have been raised already for parts of the province and Dave Campbell, with the B.C. River Forecast Centre, says the current forecast points to drought conditions provincewide in the coming weeks.

Early summer in Moscow brings an onslaught of allergy-inducing, Instagram-ready fluff from poplar seeds.

Dr. Antony Ham Pong, who's been treating allergy patients for about 35 years, warns the combination of a wet spring and heavy snow melt threaten to create a "super bloom of ragweed with lots of pollen."

The forest on the East side of Cheney Lake is changing and the biggest change is the proliferation of May Day trees.

For those who suffer from seasonal allergies, spring means red eyes, mucus and fits of sneezing. This year, the Lynn Canal has seen a remarkable spruce pollen bloom.

It is believed that the area was once-fertile land and a township stretching for 20 miles.

Pia Östensson, a biologist and pollen expert at Stockholm's Natural History museum, explains why there is so much aspen fluff this year and why it is not related to recent wildfires.

A growing die off of native Western Red Cedar trees is becoming visible right across East Vancouver Island now. Experts say its a symptom of climate change and as Skye Ryan reports, its changing the forests we've come to know across this region.

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

Kettle ponds in Denali National Park contain less water this spring than in previous years, due to low snowfall and permafrost thaw. Shrubs are replacing grasses as the lakes dry.

One of B.C.'s most abundant plants is in trouble: patches of hardy salal plants are turning up brown, crispy and dying.

Hikers across Vancouver Island say they've been finding entire forests with dying salal. No one knows why it's dying but the ramifications could be serious.

Spring blossoms, dusty streets, distant fires and a lack of rain combine to create hazardous respiratory conditions.