XKCD 3158: Shielding Chart

Alt text: Sharks can occasionally travel short distances through air when pursuing prey, but their attenuation coefficient is pretty high.

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Safely Endangered: Stranded

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XKCD 3159: Continents

Alt text: The inflection point was probably in late 1966 or 1967, so when Neil Armstrong flew to space on Gemini 8, plate tectonics was not widely accepted, but when he landed on the Moon three years later it was the mainstream consensus.

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XKCD 3160: Document Forgery

Alt text: It comes with a certificate of authenticity, which comes with a certificate of authenticity, which comes with a...

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Nerf Now: Nerf NOW!! — Cute Little Things

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War and Peas: Speeding

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XKCD 3161: Airspeed

Alt text: Carefully maneuvering the balloon down a mineshaft in an effort to break the OTHER altitude record

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Safely Endangered: Oh My Gourd

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XKCD 3162: Heart Mountain

Alt text: Even geology papers about Heart Mountain are like, "Look, we all agree this 'volcanic gas earthquake hovercraft' thing seems like it can't possibly be right, but..."

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War and Peas: Bloodline

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Cyanide and Happiness

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Perry Bible Fellowship: The Message

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XKCD 3163: Repair Video

Alt text: The statue should be in the likeness of whatever sculptor posted the sculpting tool repair video that was most helpful during the installation of the statue.

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Nerf Now: Nerf NOW!! — Hulk is Rad

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XKCD 3164: Metric Tip

Alt text: The package weighs 7 kg 9 oz.

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False Knees: Kneesvemer 2025 Day 1 (November 7, 2025)

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