Puff, puff, science. A glaring-green-moon rumor has reappeared in time for 420 "weed day" celebrations of all things pot. Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist ...

Claims that a green moon would be visible for the first time in 420 years on April 20 went viral on Facebook this week — and space experts are ready to set the record straight: there's no such thing ...