There were a number of pending bills in different legislatures challenging fair employment practices.

VOA: special.2009.04.05

On the implications of the U.S.military drawdown for United Nation's operations, Melkert said his staff work and live under challenging conditions.

VOA: standard.2010.08.04

"And the brain is activated by this challenging environment and signals to the fat to stop the release of this hormone.

VOA: standard.2010.07.14

In a brief statement from the White House, Mr.Obama stressed this will be a complex and challenging operation.

VOA: standard.2010.01.13

To reduce or avoid it, researchers have examined the effect of smoking,diet, brain-challenging games, exercise and other strategies.

VOA: standard.2010.06.17

"Challenging." But at the science cafs in St.Louis, scientists and non-scientists alike seem up to the challenge.

VOA: standard.2010.05.04

In bad times, the desert turns into a barren wasteland, challenging the survival skills of even the hardiest of people and their animals.

VOA: standard.2009.10.06

"It is extraordinarily challenging and that is why Calderon is fighting a war on multiple fronts,"

VOA: standard.2009.12.18

"I welcome President Zadari's determination to confront militants who have been challenging the authority of the democratically elected government in the northwest frontier province,"

VOA: standard.2009.06.17

Some previous studies have suggested that challenging your brain with mentally stimulating activities might help.

VOA: standard.2010.06.17

Despite some of the most challenging economic conditions in decades, American consumer confidence jumped unexpectedly this month, a sign that widespread pessimism might be dissipating.

VOA: standard.2009.08.25

Making the transition from high school to college is often a challenging experience.

VOA: standard.2009.12.04

But the acquisition of radioactive material for a so-called 'dirty bomb,' which is radioactive material that is dispersed with a conventional explosive device, that is not that challenging.

VOA: standard.2009.05.01

"Being more socially engaged in your community - maybe in environments which aren't always just the same, a little bit more challenging socially - may be a very good thing.

VOA: standard.2010.07.14