/newsroom/taxonomy/term/7408/all en /newsroom/channels/news/usa-today-arctic-will-see-ice-free-summers-2050-globe-warms-study-says-321799 <p>The Arctic Ocean will be ice-free in the summer within the next 30 years, a聽study says, which will result in "devastating consequences for the Arctic ecosystem," according to聽平特五不中聽in Montreal. Sea ice is frozen ocean water that melts each summer, then refreezes each winter. The amount of summer sea ice in the Arctic has been steadily shrinking over the past few decades because of global warming. Since satellite records began in 1979, summer Arctic ice has lost 40% of its area and up to 70% of its volume, the聽Guardian聽said.</p> Thu, 23 Apr 2020 15:21:53 +0000 amelia.souffrant@mail.mcgill.ca 209119 at /newsroom /newsroom/wagdi-george-habashi Tue, 26 Feb 2019 16:59:44 +0000 Anonymous 22690 at /newsroom /newsroom/channels/news/geophysics-could-slow-antarctic-ice-retreat-256655 <p>聽Gravitational effects, variations in Earth structure could damp rise in global sea levels Tue, 10 Nov 2015 15:17:50 +0000 laurie.devine@mcgill.ca 24688 at /newsroom