One of the earliest climate model predictions of how human-made climate change would affect our planet showed that the Arctic would warm about two to three times more than the global average. Forty years later, this “Arctic amplification” has been observed first-hand.
Record-breaking Arctic warming and the dramatic decline of sea ice are having severe consequences on sensitive ecosystems in the region.
But why has the Arctic warmed more than the tropics and the mid-latitudes?
We now know that this is due, in part, to tiny concentrations of very powerful greenhouse gases, including ozone-depleting substances such as chlorofluorocarbons (CFCs).
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Fuel cells turn chemicals into electricity. Now, a team from the University of Toronto’s Faculty of Applied Science & Engineering has adapted technology from fuel cells to do the reverse: harness electricity to make valuable chemicals from waste carbon dioxide.
The research was recently published in the journal Science.
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Plastic pollution is a growing global concern. Large pieces of plastic have been found almost everywhere on Earth, from the most visited beaches to remote, uninhabited islands. Because wildlife are regularly exposed to plastic pollution, we often ask what effects plastics have on the animals.
Over time, macroplastics (plastic debris larger than five millimetres in size) break up into tiny particles called microplastics (smaller than five millimetres), which can persist in the environment for hundreds of years.
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The substances responsible for creating a massive hole in the Earth’s ozone layer may account for nearly half of Arctic warming over a 50-year period, according to a new study by researchers at the University of Toronto.
The research, published in Nature Climate Change, highlights how ozone-depleting substances (ODS) are a significant and unrecognized source of 20th-century Arctic climate change.
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Researchers at the University of Toronto Scarborough have, for the first time, turned waste cooking oil – from the deep fryers of a local McDonald’s – into a high-resolution, biodegradable 3D printing resin.
Using waste cooking oil for 3D printing has significant potential. Not only is it cheaper to make, the plastics made from it break down naturally unlike conventional 3D printing resins.
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University of Toronto researchers have developed a new strategy to remove tiny oil droplets from wastewater with more than 90 per cent efficiency in just 10 minutes. Their secret weapon?
A sponge.
“Oil extraction operations such as hydraulic fracturing, or fracking, produce nearly 100 billion barrels of oil-contaminated wastewater each year,” says Chul Park, a professor in the department of mechanical and industrial engineering in the Faculty of Applied Science & Engineering.
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