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What is the cheapest way to beat climate change? (www.youtube.com)

There are lots of ways we are tackling the climate crisis, bringing down emissions and sucking carbon out of the atmosphere. But which method is the most cost-effective? For a given investment, which draws down the most carbon emissions? In this video I answer that question… and then talk about why that answer doesn’t...

[37c3] The Extremely Large Telescope (ELT): Building the biggest optical telescope on earth (media.ccc.de)

AstronomersEngineers^1^ presenting at the 37th Chaos Communication Congress for a general but technical audience. The congress is still going on in case you’re interested, lots of interesting stuff there and don’t be afraid of German talks there’s real-time dubbing....

Cut anything, even diamond (www.youtube.com)

Today we’re looking at an ion milling machine. This instrument accelerates argon particles to high velocities and then slam them into your sample, acting as an atomic sandblaster. The sample is slowly etched due to the transfer of kinetic energy from the argon gas molecules. It can etch literally any material, even diamond!

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