(AP)—The U.N.'s top population official wants governments to do more to ensure that women have access to family planning.

The U.N. says the world will add a billion people to its current population of some 7 billion within a decade, further straining the planet's resources.

Babatunde Osotimehin, executive director of the U.N. Population Fund, says more than 220 million women in the want family planning but aren't getting it.

Speaking to The Associated Press at the in Davos, he said many women want to have fewer children and that "30 percent of those who die we can prevent with family planning."

He also called for providing girls with "comprehensive sexuality education."