About an hour later, I was part of the mass movement of students going in opposite directions, in wind-whipped snow, two roughly parallel columns moving from old campus to new and vice versa, faces in ski masks, bodies shouldering into the wind or pushed along by it.

NEWYORKER: Midnight in Dostoevsky

Their main finding was that a nerve impulse, now known as an action potential, is caused by the movement in opposite directions across the axon's surface membrane of sodium and potassium ions.

ECONOMIST: Andrew Huxley

Mr. STEWARD ACUFF (AFL-CIO): The economy is growing in different directions and it's growing away from the traditional foundation of the American labor movement, which is manufacturing and heavy industry.

NPR: UAW Sets Sights on Other Industries