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Blockchains: How They Work and Why They’ll Change the World

The technology behind Bitcoin could touch every transaction you ever make

16 min read
Photo by The Vorhes
Photo: The Vorhes

img Photo: The Voorhes

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New Filter Doubles Nuclear Fuel Extractable from Seawater

It pulls uranium out at record rates—but real-world tests are still to come

3 min read
illustration of a blue stream of water traveling diagonally to the lower left, intersecting with a white filter membrane substance with yellow and red atomic stick models floating around in the upper half of the image
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences/Nature Sustainability

The International Atomic Energy Agency expects nuclear power to grow significantly in the coming decades, by up to 82 percent by the year 2050. That would create an increase in demand for uranium that reserves on land may not be able to meet.

But the world’s oceans, according to the U.S. Department of Energy, contain at least 500 times more uranium than in all known terrestrial reserves. That equates to more than 4.5 billion metric tons of the element in seawater, albeit present at an extremely dilute concentration of 3.3 parts per billion, and scientists have been trying to find efficient ways to extract it.

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Video Friday: Guitar Bot

Your weekly selection of awesome robot videos

3 min read
Closeup of a robotic arm strumming an acoustic guitar

Video Friday is your weekly selection of awesome robotics videos, collected by your friends at IEEE Spectrum robotics. We’ll also be posting a weekly calendar of upcoming robotics events for the next few months; here's what we have so far (send us your events!):

ICRA 2022: 23–27 May 2022, Philadelphia
ERF 2022: 28–30 June 2022, Rotterdam, Germany
CLAWAR 2022: 12–14 September 2022, Açores, Portugal

Let us know if you have suggestions for next week, and enjoy today's videos.

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Learn How to Use a High-Performance Digitizer

Join Teledyne for a three-part webinar series on high-performance data acquisition basics

1 min read

Webinar: High-Performance Digitizer Basics

Part 3: How to Use a High-Performance Digitizer

Date: Tuesday, December 7, 2021

Time: 10 AM PST | 1 PM EST

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