"I'm just wondering why a yogurt is more dangerous than a penknife or a golf club, " she said.

WSJ: New TSA rules on knives draw fire from 9/11 kin

His appetite for inventions went back to his childhood, when he had devised a fork and spoon that could fit into a penknife.

ECONOMIST: Robert Rines | The

But the pods are so small and tight that he can barely split them open with his penknife blade to show me the bean inside.

BBC: US crops tell story of future world food prices

If you were scuba diving and a shark came out of the blue, I'd take my penknife and I'd end that shark's life, fix you up some hammerhead stew.

NPR: Bluesman Delbert McClinton's 'Cost of Living'

They took my belt, my penknife and my watch.

ECONOMIST: Poland's historical epic in the limelight