Direct air carbon capture is currently far too costly – but this London company says it can do it at enormous scale for a tenth the price, using engineered algal blooms in ponds located near desert coastlines. Oh, and it'll de-acidify the ocean, too.

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An XPrize competition designed to develop solutions to the mounting levels of carbon dioxide in the atmosphere has progressed to its next phase, with 15 teams from around the world each awarded US$1 million to continue developing their technologies.

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The last chapter in a trio of reports from the UN's top climate scientists has landed, with the authors noting some reasons for optimism, mounting an argument that the window is still open for meaningful action to limit warming to around 1.5 °C.

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The processing of foods typically generates a lot of wastewater, which has to be cleaned up before being released back into local waterways. According to new research, however, that water could first be put to use as a very effective fertilizer for farmed seaweed.

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While all non-recyclable plastics aren't very eco-friendly, expanded polystyrene foam is particularly problematic, as it's bulky and often used in disposable packaging. It could be replaced by a new biodegradable material, however, made from sawdust.

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Wood is becoming an increasingly popular building material, but the timber is harvested mainly just from the long, straight trunks of trees. Aiming to reduce waste, an MIT team has developed a method of also using a tree's load-bearing junctions.

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In what is being hailed as a historic day, global leaders at the UN Environmental Assembly have endorsed a first-of-a-kind resolution that addresses the full lifecycle of plastic, with the goal of reducing its growing impacts on the natural world.

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While solar farms are a source of green energy, many people don't like the fact that they occupy land which could be otherwise utilized. A new project is exploring an alternative, by placing solar panels over canals that will benefit from the shade.

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Meltwater is falling to the base of the Greenland Ice Sheet with such force, the power produced is comparable to that generated by the world's largest hydroelectric power station, creating a melting effect at the bottom that is "completely unprecedented."

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Scientists in Germany are exploring an interesting solution to the problem of soils contaminated with microplastics, and have demonstrated how birch trees might be used to soak up the small plastic particles with their roots.

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