Surgeon Christoph Haller and his research team from Toronto's Hospital for Sick Children are working on technology that could someday result in an artificial womb to help extremely premature babies. Chloe Ellingson for NPR hide caption

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Health News From NPRDenise Lee on her last day of chemo. In addition to chemo and surgery, she was treated with immunotherapy. She's currently in remission. Denise Lee hide caption
After 40 years of smoking, she survived lung cancer thanks to new treatments
With diary cows getting bird flu, researchers are trying to figure out what mutations could make the virus a threat to humans. Charlie Neibergall/AP hide caption
How Florida and Arizona Supreme Court rulings change the abortion access map
While not an official holiday, National Siblings Day on April 10 has gained momentum on social media in recent years. Diana Haronis/Getty Images hide caption
EPA is limiting PFAS chemicals in drinking water in the U.S. Rogelio V. Solis/AP hide caption
At left, Zion Kelly holds a photo of his late twin brother Zaire Kelly. At right, Zion keeps this framed photo of he and his brother on the desk in his bedroom. Dee Dwyer for NPR hide caption
A gunman stole his twin from him. This is what he's learned about grieving a sibling
Many young people who started vaping nicotine as teens several years ago haven't quit the habit, data show. Daisy-Daisy/Getty Images hide caption
In the womb, a brother's hormones can shape a sister's future
Since Arkansas started sending the obesity letters to parents, the state's childhood obesity rates rose to nearly 24% from 21%. During the pandemic, the state obesity rate hit a high of more than 26%. M. Spencer Green/AP hide caption
A record number of Americans are getting health insurance through the Affordable Care Act, and states that use the HealthCare.gov marketplace are vulnerable to a scheme where plans are switched without the consumer's permission. Alex Brandon/AP hide caption
California legislators in 2019 passed the law that requires all the state's 33 public university campuses to provide abortion pills. It took effect in January 2023, but LAist found that basic information for students to obtain the medication is often nonexistent. Jackie Fortiér/LAist hide caption
California colleges provide abortion pills but many fail to make students aware
An outbreak of bird flu is affecting dairy cows in the U.S. Charlie Neibergall/AP hide caption
Early in life, Sam (left) and John were much more similar than they may seem today. "They both did not wave, they didn't respond to their name, they both had a lot of repetitive movements," says their mother, Kim Leaird. Jodi Hilton for NPR hide caption
These identical twins both grew up with autism, but took very different paths
Mental health care is hard to find, especially for people with Medicare or Medicaid
Sibling Coffee Roasters owner Libby Powell poses with her brother, Benjamin Withem, outside her West Virginia coffee shop. In her hand is an early photo of the pair — one they are trying to re-create. Susana Raab/for NPR hide caption
At the heart of this cozy coffee shop lies a big sister's love for her little brother
Eric Portenga and Kevin O'Neill with daughters Sylvie, Robin and Parker O'Neill celebrating the girls' 2nd birthday in Sept. 2023. The babies' surrogate lived in Ohio because of Michigan's laws, that are changing now. The Portenga-O'Neill family hide caption
As Michigan legalizes surrogacy, here's how families found ways around the ban
Insurance brokers say rogue agents are switching batches of customers to new plans without the customers' knowledge. The agents then collect monthly commissions on the Affordable Care Act plans. Ralf Hahn/Getty Images hide caption
Many cities have older lead service lines connecting homes to the water system. Seth Wenig/AP hide caption
Lead in the drinking water is still a problem in the U.S. — especially in Chicago
Amid growing concern about children's use of social media, the United Kingdom implemented rules designed to keep kids safer and limit their screen time. The U.S. is weighing similar legislation. Matt Cardy/Getty Images hide caption
What's the best time to exercise? The science of circadian rhythms has some clues. Jacobs Stock Photography Ltd/Getty Images hide caption