The sweltering weather continues Saturday with several parts of Canada under heat warnings and Toronto, Ottawa and Windsor experiencing the hottest day of the year.

Environment Canada has issued air quality statements for parts of the N.W.T.'s Mackenzie Delta region, including Fort McPherson and Tsiigehtchic.

"I am worried that unless we do something, the algae will kill the lake, or at least our enjoyment of it."

Fifty pilot whales were found dead on the shore of Löngufjörur in a sparsely populated part of the Snæfellsnes peninsula on Thursday, RÚV reports.

Fireweed observed with flat, curled stem and many buds, indicating fasciation.

Hoverfly larva (possibly Dasysyrphus) found out in the open. Usually, they are found in stagnant water, on a decomposing animal carcass, or in rot holes of trees.

Chum salmon (Oncorhynchus keta) caught with a spinal curvature, which may be related to many different factors including genetics, infectious disease, trauma, neoplasm, diet, or changes in the environment.

“The growth-cycle this year is unprecedented,” with carrots, peas and broccoli heads “as big as a platter,” farmers market vendors say.

Another Metro Vancouver beach has been closed to swimmers following concerns about bacteria.

Two sturgeon were caught in the Yukon River, farther upriver than has been previously reported.

The department of Environment and Natural Resources says fires were caused by lightning.

Furry visitors have kept the residents of Angoon on their toes for the past few weeks. Several bears have made a habit of passing through town.

"He could have picked it up in the backyard or on an earlier walk to the park."

Temperatures in July reached 100 degrees Fahrenheit, above the normal high temperature of 72.3 degrees.

Weather watchers are focused on the world's most northerly community, which is in the middle of a record-breaking heat wave.

The bird flew in on the mudflats at high tide and joined a small flock of Western Sandpipers. This is the second record for the province of BC.

Thunderstorms are unusual in Unalakleet; however, a thunderstorm cell persisted in the area for longer than usual. Hot, dry conditions across Alaska have increased the risk of wildland fire, including that started from lightening strike.

Discolored marine waters near Haines may be reflective of the extremely high level of algae in southeast waters this month.

Alaska Sea Grant agent Gay Sheffield from Nome responded to report of a dead bowhead and a dead grey whale northeast of Shishmaref near Cape Espenburg.