And it can go from zero to ninety-five kilometers an hour in just two and one half seconds.

VOA: special.2009.11.03

Malaria kills about two hundred thousand children in Africa every year, an average of one every thirty seconds.

VOA: special.2010.04.20

For example, the TMR patients completed elbow and wrist movements in an average of one-point-two-nine seconds.

VOA: special.2009.03.10

Historians say thirty-two shots were fired in the space of about twenty-three seconds.

VOA: special.2010.02.15