A blue-green algae bloom in Yellowknife Bay sparked worry for people's dogs. Here's what an aquatic quality scientist and a veterinarian have to say about it.

Clean, fresh air can be part of the draw for tourists to Canada's North — but they won't find it this week in Yellowknife due to wildfire smoke.

Environment and Climate Change Canada (ECCC) has issued heat warnings for Yellowknife and many communities in the South Slave, Sahtu and Beaufort Delta regions — where day time temperatures near 30 C and overnight lows near 20 C are expected in the coming days. People are urged to seek out air conditioned spaces to seek relief.

The risk of wildfires remains high in the southern part of the N.W.T., and the forecast is calling for more hot, windy weather in the days ahead. That makes for "a dangerous, truly extraordinary combination for this time of year."

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