Uranium glass marbles

If you're concerned that these Uranium Glass Marbles are simply standard marbles with phosphorescent material or somesuch, worry not! Amazon assures the consumer that they'll get a geiger counter going.

... A Ludlum Model 44-9 Geiger-Mueller probe connected to a Ludlum Model 3 when in direct contact will read several hundred cpm.

That said, a lot of the reviewers talk of using blacklight to see them, which does suggest an absolute minimum of radioactive material augmented by fluorescent paint. There's six in each pack of 5/8" marbles. Read the rest

If there's a nuclear blast, "do not use hair conditioner in your hair"!

After last week's threats from North Korea that it was planning to create an "enveloping fire" around the US territory of Guam, Guam's Office of Civil Defense issued a set of just-in-case guidelines – which you can also find here - on how to stay safe after a nuclear attack. There are a lot of interesting tips and warnings in these guidelines, but one that sticks out is:

"Wash your hair with shampoo or soap and water. Do not use conditioner in your hair because it will bind radioactive material to your hair, keeping it from rinsing out easily." This is especially important if you haven't been able to immediately find inside shelter.

According to NPR:

If you shower carefully with soap and shampoo, Karam says [Andrew Karam, radiation expert], the radioactive dust should wash right out. But hair conditioner has particular compounds called cationic surfactants and polymers. If radioactive particles have drifted underneath damaged scales of hair protein, these compounds can pull those scales down to create a smooth strand of hair. "That can trap particles of contamination inside of the scale," Karam says.

These conditioner compounds are also oily and have a positive charge on one end that will make them stick to negatively charged sections of a strand of hair, says Perry Romanowski, a cosmetics chemist who has developed personal hygiene formulas and now hosts "The Beauty Brains" podcast on cosmetics chemistry.

"Unlike shampoo, conditioners are meant to stay behind on your hair," Romanowski says. If the conditioner comes into contact with radioactive material, these sticky, oily compounds can gum radioactive dust into your hair, he says.

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Radioactive material stolen in Mexico. Authorities: If you find our nukes, 'don't open it'

Authorities in nine Mexico states are ordered on high alert for stolen radioactive material. Mexico's chief of national emergency services announced the missing hot stuff on Monday. Read the rest