The viruses appear to harm the bees' ability to use their genes to produce proteins needed to fight infections.

VOA: special.2009.09.22

The disease especially affects the ability to see, the sense of touch and the use of the arms and legs.

VOA: special.2009.01.06

But now the heart association says everyone should use hands-only CPR unless they feel strong about their ability to do rescue breathing.

VOA: special.2009.06.09

Experts say use of cigarettes and alcoholic liquids also reduces the body's ability to use oxygen.

VOA: special.2009.07.14

But they say this is more a reflection on the nature of the message then the writer's ability to use language correctly.

VOA: standard.2010.01.16

"And whatever tools I am given, I will use them to the best of my ability.

VOA: standard.2010.06.29