The critical mass of fissile material is the amount needed for a sustained nuclear chain reaction.
http://en.wikipedia.org/wiki/Critical_mass
The critical mass of fissile material is the amount needed for a sustained nuclear chain reaction.
http://en.wikipedia.org/wiki/Critical_mass

Dancing all night doesn’t mean your true self is a dancer any more than running for your life makes you a runner or getting sunburned makes you a piece of toast.Burning Blog » Blog Archive » Does wearing a utilikilt and fuzzy boots make you more “authentic?”
Mass Incarceration and Criminal Justice in America : The New Yorker
Why Regret Makes Buying Experiences Better than Buying Stuff | Psychology Today
Our world, and our lives, are fragile; we’re here for but a moment and bound in ways we can’t even imagine to the people, spaces, and nature that surround us; and true beauty is marveling at the complex majesty of the human experience.Why TED and Burning Man Are More Similar Than You Think | Inc.com
Don’t you wanna push the button? The red, shiny, candy-like button that beckons you closer and closer?
If only I could find it in the dark!