Doctor Murray says lower fertility rates around the world, combined with higher earnings, are also reducing deaths.

VOA: special.2010.04.14

This is largely the result of more births in older women and more use of fertility treatments.

VOA: special.2009.10.26

Fertility treatments can produce multiple births, which increases the risk that the babies will arrive early.

VOA: special.2009.10.19

They do not bite women who are bleeding during their fertility period.

VOA: special.2009.05.26

He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.

VOA: special.2010.05.18