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In this prototype carbon capture apparatus, a solution of potassium hydroxide is wicked up into polypropylene fibres; circulating air evaporates the water in the solution, concentrating it to very high levels. The white crystals are nearly pure potassium carbonate, formed from carbon removed directly from air. (photo by Dongha Kim)

New ‘rock candy’ technique offers a simpler, less costly way to capture carbon directly from air

A Reeddi power capsule, shown at right, provides affordable and sustainable electricity for short-term needs. A startup created by Olugbenga Olubanjo (CivE MASc 1T9) is piloting the technology in Nigeria. (Photo: Leke Alabi Isama/GGImages/Proof Africa)

Reeddi powers up: Startup brings portable, renewable electricity to rural areas

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Celebrating U of T Engineering volunteers at the 2025 Arbor Awards

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