In 1966 Kenneth Greisen, Vadim Kuzmin and Georgiy Zatsepin showed that high-energy charged particles (cosmic rays are mostly atomic nuclei, and thus positively charged) should be slowed by collisions with the photons of the cosmic microwave background (radiation left over from the Big Bang that permeates all space).

ECONOMIST: Cosmic rays: They came from outer space | The

It would be nice to be able to max out the 401(k) and still have money left over to get those 529 accounts going.

FORBES: Paying for College: Five Rules to Protect Your Retirement

Most famously, if one window was broken in a building and left unrepaired (his italics), soon all the other windows would be broken too, and criminal elements would take over.

ECONOMIST: James Q. Wilson