This has additional salience now that we know that special counsel Robert Mueller is indeed investigating Donald Trump. If Trump fires Mueller (or orders his firing). Julia Ioffe summarizes what we know about Jeff Sessions’s meetings with Sergey Kislyak and what we don’t know.
Japan has a lot of plutonium, supposedly to provide electrical power via reactors. But they are denuclearizing. China has always been suspicious, because that plutonium could be used in bombs. Here are discussions from the Carter administration, but the problem is real today. Photo: Control room for the Rokkasho nuclear fuel reprocessing plant.
You know that mystery radio telescope signal that might have been a closed-in solar system? Nope – comets.