Bill nominates, perhaps only provocatively, James Bosnack's cigarette machine as the invention with the greatest economic impact on the 20th century. Cigarettes, as compared to pipes and cigars, are and... continue reading

posted by bobknight33 7 years 1 month 2 weeks ago • 90 views • 2:41

An interesting riddle - can you sifters solve it, without resorting to the solution in the video (from 1:25)? iflscience: The following riddle is claimed to have been written by Einstein as a boy. It's... continue reading

posted by Zawash 9 years 6 months 3 weeks ago • 52 views • 5:08