Another reason moms-to-be need to be around clean air, water, parkland.

Living near green spaces - parks, gardens, and even cemeteries - is associated with fewer low birth weight babies.

Eating right, exercising, and avoiding extreme amounts of stress are just some of the ways that expectant mothers can cocoon their babies in the healthiest environment possible. And now scientists say there’s another thing pregnant women can do to help their babies to emerge from the womb at a healthy weight.