History Japan's greatest sword was surrendered to a US sergeant in 1946. Nobody knows where it is. Ellsworth Toohey
food science Food historian reveals how salt transformed civilizations and sparked Gandhi's rebellion Ellsworth Toohey
mysteries Star jelly: a mysterious substance that has confounded the best minds for centuries Mark Frauenfelder
trump Trump's name is perfect for him: a "braying, bumptious mountebank" who repeatedly fleeces his gullible marks Mark Frauenfelder
france Human-shaped lead sarcophagus found under the floor of Notre Dame Cathedral to be opened. Cue heavy metal music. David Pescovitz