Upgrade your locks with fingerprint-scanning or a keypad, whether it’s at the front door or a sliding glass entryway. Facilities that make wood pellets have a track record of catching alight. Yet ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly ...