Puzzle Description:

Lithium Lithium peroxide and lithium hydroxide are used in submarines and aircraft to purify the air. The red Li is because when lithium burns, it burns with a red flame.

#1: Sarah Andrews (sarah) on Jun 13, 2011 [SPOILER]

very nice sub.

i swear i just did this puzzle recently

you did; this is a revised puzzle

Sting has a song called Lithium Sunset. Apparently someone once told him that, since every element is present in the sun, you can stare at the sun as it sets (when it's marginally safer to look directly at the sun), and you'll absorb lithium directly into your eyes.

By that logic, of course, you're also absorbing arsenic, mercury, and a host of other harmful elements. :)

I'm a chemist so this is one of my favorite puzzles.

I'm a chemist so this is one of my favorite puzzles.

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