Outdoor lighting for buildings, roads and advertising can help people see in the dark of night, but many astronomers are growing increasingly concerned that these lights could be blinding us to the rest of the universe.
An estimate from 2023[1] showed that the rate of human-produced light is increasing in the night sky by as much as 10%...
Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into the U.S. again. The pace of the 2025 fires[1] is reminiscent of the record-breaking 2023 wildfire season[2], which exposed millions of people[3] in North America to hazardous smoke levels.
For most of the past decade,...
Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into the U.S. again. The pace of the 2025 fires[1] is reminiscent of the record-breaking 2023 wildfire season[2], which exposed millions of people[3] in North America to hazardous smoke levels.
For most of the past decade,...