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350 Is The Upper Limit
"If humanity wishes to preserve a planet similar to that on which civilization developed and to which life on earth is adapted... CO2 will need to be reduced from its current 385 ppm to at most 350 ppm." Jim Hansen, NASA

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Homemade Telescope for About 5 Bucks

The View From The Cheap Seats

So there you are, at the ~~game~~ ~~beach~~ ~~parking lot of a super secret facility~~ just out enjoying the night sky doing absolutely nothing wrong and you think to yourself, Wouldn’t it be great to have a telescope right now! I can remember when I was young, my brothers and I would make “play telescopes” out of toilet paper cardboard… remember that? I don’t remember them working very well, though. Real telescopes were just a fancy fancy.

Thanks to the folks over at Metacafe for pointing us to the following video. All you need to make the telescope are 2 empty 2-liter bottles, two easily found magnifying glasses and some tape. For tools you’ll need some scissors and a screwdriver. I suppose in a pinch a single knife would do the job of both.

The video is 90 seconds. Enjoy!

Make A Telescope In 90 Seconds

Home Made Telescope – The funniest bloopers are right here

I am Jon, but I remember feeling like Galileo.