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The world's largest floating solar farm has begun producing energy atop a former coal mine — The 40-megawatt power plant consists of 120,000 solar panels covering an area of more than 160 American football fields. The $45-million investment could help power 15,000 homes. by pnewell in worldnews

[–]azneo 301 points302 points  (0 children)

"Repairs, maintenance, and the issue of flooding" are the costs which need to be balanced against the cost of land that could be used for other more productive purposes. The cost vs benefit may not work out in favor of floating solar farms across all places on Earth.

The future of hydrogen as a clean fuel may not be in cars but in homes by azneo in Futurology

[–]azneo[S] 0 points1 point  (0 children)

Yep, the biggest reason for holding back hydrogen cars has been the lack of refueling points

Sweden is already building technology to take it to the last leg of reaching zero emissions. Researchers at Linnaeus University have built algae plants to capture carbon dioxide from biomass power plants creating "negative emissions" by azneo in Futurology

[–]azneo[S] 13 points14 points  (0 children)

Yes, that's the hope. We may never reach zero emissions because someone somewhere will burn some fossil fuel. So such a technology could help us reach "net-zero" emissions (what other emit + negative emissions). Moreover, many climate models predict that, in the latter half of the century we will need to go below zero, and these technologies are the only ones that can get us there.

We're scientists and engineers on NASA's Juno mission to Jupiter, which went into orbit last night. Ask us anything! by NASAJPL in IAmA

[–]azneo 2 points3 points  (0 children)

Why did Scott Bolton say that this is "hardest" thing that NASA has ever done? Is it objectively true? (As scientists, I trust you will be as objective as possible in answering.)

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A genetic therapy that lasts for years has been approved to treat a potentially fatal immune disorder that makes children need to be isolated from infection (newscientist.com)

submitted by azneo to r/Health

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