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Science & Space

The most popular blog posts about science & space on Hacker News. 4,452 posts.

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129

Why is desalination so difficult?

[Note that this article is a transcript of the video embedded above.] This is the Carlsbad Desalination Plant outside of San Diego, California. It produces roughly ten percent of the area’s fresh water, around 50 million gallons or 23,000 cubic meters per day. Unlike most treatment plants that cle

138

Suspicious Discontinuities

If you read any personal finance forums late last year, there's a decent chance you ran across a question from someone who was desperately trying to lose money before the end of the year. There are a number of ways someone could do this; one commonly suggested scheme was to buy put options that were expected to expire…