At its worst, the crisis affected nearly a third of world air travel.

VOA: special.2010.04.23

"The unemployment rate could,could, at its worst be over 10 percent before it starts to get better,"

VOA: standard.2009.04.02

And the World Cup is where the beautiful game appears at its best -- and sometimes its worst.

VOA: special.2010.06.09

This latest incident comes at a time when Afghanistan is witnessing its worst violence of the eight-year-long war following the ouster of the Taliban from power in 2001.

VOA: standard.2009.09.12