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HotSpots H2O: As Water Systems Fail in Pakistan, Heat Wave Begets A Health Crisis

Circle of Blue

Residents of notoriously polluted New Delhi, where half of the population lacks access to air conditioning, describe soaking in contaminated waters to stay cool. . Such events are becoming more common as Earth’s atmosphere continues to warm. Cooling monsoon rains will moderate temperatures, but not for another month.

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A Dangerous Disruption

Legal Planet

Last week, MIT’s “Technology Review” reported that a small startup firm is proposing to spray reflective aerosols in the stratosphere commercially as a climate corrective. First, the cooling from the reflective materials they will inject, for which they are already selling carbon credits, charging $10 per gram of SO 2 released (!)

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Higher-altitude solar geoengineering brings no cost benefit, study predicts

Physics World

Solar geoengineering offers a way of mitigating the effects of global warming by reflecting incoming sunlight back into space – thereby cooling the Earth. One way of doing this is to inject aerosols into the atmosphere. To maintain a 1 °C cooling effect, this would cost about $43bn per year to operate. Longer lasting.

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Scientists strive for negative emissions

A Greener Life

Human activity adds more than 50 gigatons of carbon dioxide to the atmosphere each year. New Solid Carbon technology might be able to lock climate-warming carbon dioxide below ocean bedrock. Basalt is a porous rock formed from cooling lava. That means the Solid Carbon technology could be used at sea anywhere.

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Delayed harm and the politics of climate change, reconsidered

Legal Planet

Does the climate keep warming, stay the same, or even cool? First, after carbon dioxide emissions cease, atmospheric carbon dioxide levels begin to decrease, as they are absorbed by natural processes and sinks in the oceans and on land. But what happens when we achieve the goal of zero carbon dioxide emissions from human actions?

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Solar-powered harvesters could produce clean water for one billion people

Physics World

Addressing this serious problem using existing technologies is a key part of the United Nation’s sustainable development goals – with the organization declaring that everyone should have access to five litres of safe drinking water every day. The lack of access to safely managed drinking water now affects some 2.2 billion people worldwide.

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The Climate Overshoot Commission Releases its Report

Legal Planet

To give the Commission credit where due — and it is due in many places — on one point closely related to these projections, they were uncommonly and admirably frank: Noting the risks and the stark tradeoffs posed by aerosol pollution in the lower atmosphere. Current and coming advances in carbon-free technology will help, of course.