Rebecca Davis

Nervous mothers and dads once had only family and friends to turn to for advice on kids. Then, in 1912, the U.S. government created an agency devoted to children, and queries from moms poured in.

African-American women are more likely to lose a baby in the first year of life than women of any other race. Scientists think that stress from racism makes their bodies and babies more vulnerable.

"You must leave now," thousands of Americans from Puerto Rico to Oregon to Florida, Montana, Texas and beyond were told, as floods, fire and wind threatened their lives. Some said no.

In one Houston community, residents stand around on a street corner as if it were a bus stop — waiting to catch a ride on a boat that will take them to see their flooded homes.

Nicole was only 23 when she had a double mastectomy following a breast cancer diagnosis. After she recovered, Nicole got a chest tattoo that symbolized how she wants to live life after cancer.

In Leipzig, Germany, two scientists from very different backgrounds are working on a unique research project.

It was a life-and-death journey out of Aleppo. Nedal Said could never have imagined how it would end.

Carmen Bachmann, a professor in Leipzig, is building an online network to help political refugees who are scientists or social scientists connect with professional peers in Germany — their new home.

Melanoma can be a deadly skin cancer, but 10 years ago, biologist Jim Allison figured out a way to tweak the body's immune system to go after those malignant cells. Some patients are now cancer-free.

When Jimmy Carter said his advanced melanoma was gone, he credited immunotherapy, treatments that harness the immune system to fight cancer cells. This idea dates back to a 19th-century doctor.