Nuclear reactors

About six or seven billion years ago, a massive star exploded, and its debris, containing (among other things) traces of gold, mercury, lead, and uranium, slammed into a cloud of gas and dust floating on the outskirts of the galaxy.

     

“You’re going to learn how to heat water about ten degrees.”

“In a legendary 1993 paper, Professor Joel Waldfogel suggested that holiday gift-giving provides less of an economic boost (to the individual and the GDP) than we expect. The reason is the recipient’s dissatisfaction.

Energy needs worl