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Science & Space

The most popular blog posts about science & space on Hacker News. 4,455 posts.

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2401

Helion Needs You

Helion has been progressing even faster than I expected and is on pace in 2024 to 1) demonstrate Q > 1 fusion and 2) resolve all questions needed to design a mass-producible fusion generator. ...

2403

Corn Cobs: Fuel of Nightmares

Earlier this year, in the bitter cold of Kansas winter, we began field testing our first scaled pyrolyzer, designed to process 10 tons of biomass per day. The pyrolyzer processed California wheat straw just fine. But now in Kansas, corn stover turned out to be a bit different. The bales not only had leaves and stalks…

2410

Plunge in lithium-ion battery costs

The cost of lithium-ion batteries for phones, laptops, and cars has plunged over the years, and an MIT study shows just how dramatic that drop has been. The change is akin to that of solar and wind energy, and further declines may yet be possible, the researchers say.

2426

Erdős Problem #1026

Problem 1026 on the Erdős problem web site recently got solved through an interesting combination of existing literature, online collaboration, and AI tools. The purpose of this blog post is to try…