Dozens of flights out of Phoenix, Arizona, have been cancelled because of extreme heat.

A 300-metre wide, 1,000-meter high rock slid into the sea causing the initial wave and more of the rock face is unstable.

American Airlines has canceled 38 flights in and out of Phoenix on Tuesday afternoon because of extreme heat.

For the first time in 25 years, the Kluane Chilkat International Bike Relay has been cancelled - unexpectedly due to snow, 'black ice and slushy sections.'

The water level on Kluane Lake began dropping last year after a river of glacial meltwater abruptly changed course, leaving docks and boat ramps high and dry.

Goldfish Lake near Port Heiden is on the verge of draining into the Bering Sea.

The Shiveluch volcano in Russia's Far Eastern Kamchatka region has erupted, spewing ash some 13km above sea level.Officials from the region's Emergency Situations Ministry have confirmed that the ash is not expected to land on nearby settlements, Meanwhile a "red warning" has been issued to passing planes, urging them to avoid the site.The Shiveluch volcano is extimated to be between 60,000 and 70,000 years old.

Chris Burn at Carleton University is tracking the growing cost of maintaining Yukon’s Dempster Highway as warmer weather brings more landslides, washouts and other challenges.

A wildfire is burning in a remote area of northwest Alaska. The Alaska Fire Service reports that the Zane Hills Fire was discovered this week, and mapped at 1,900 acres.

The country's 3,300 miles of ice roads are a lifeline for marooned communities during frigid winters, but climate change is making the roads unsafe much earlier.

The past three winters have been particularly hard on road pavements. Wet winters with temperatures fluctuating on both sides of the freezing point have damaged even relatively fresh asphalt, leading to cracks, potholes and deep ruts.

Northern Manitoba town's grocery shelves are bare as residents face another blizzard.

A year after a fuel-carrying truck broke through the ice on the Deline winter road, the N.W.T.'s Department of Transportation has yet to release the results of an investigation into why the accident happened.

Every winter, a massive infrastructure project takes place on the North Slope one thats designed to disappear. Ice roads are built to minimize the oil industrys footprint on the sensitive tundra, and melt away in spring. Many of the oil industrys multi-million dollar projects on the North Slope cant be built until the ice roads are finished each year.

Construction is beginning today on the ice road connecting Yellowknife to Dettah on the N.W.T.'s Yellowknife Bay, but a warm November means that it will open in January for the second time since the 2006/2007 season, and the second year in a row.

Winter storm shuts down communication services for the community.

The storm raises local concerns about food security and preparedness for transportation emergencies.

Hazardous driving conditions due to freezing rain.