UK Biobank, based in Manchester, England, is the largest blood-based research project in the world. The research project will involve at least 500,000 people across the U.K., and follow their health for next 30 years or more, providing a resource for scientists battling diseases. Christopher Furlong/Getty Images hide caption
This cube of uranium metal came from a reactor that was built by the Nazis during World War II. Hundreds of others like it are now missing. John T. Consoli/University of Maryland hide caption
The Australian federal government has downgraded its long-term outlook of the Great Barrier Reef to "very poor," and it says that climate change is the most significant threat. William West/AFP/Getty Images hide caption
The Environmental Protection Agency has released a proposed rule that could roll back requirements on detecting and plugging methane leaks at oil and gas facilities. Charlie Riedel/AP hide caption
Scientists say pea-size organoids of human brain tissue may offer a way to study the biological beginnings of a wide range of brain conditions, including autism, bipolar disorder and schizophrenia. Alysson Muotri/UC San Diego Health Sciences hide caption
A sign warns beachgoers about sharks in the water at Newcomb Hollow Beach in Wellfleet, Mass. Sarah Mizes-Tan/WCAI hide caption
Greta Thunberg, a 16-year-old Swedish climate activist, arrived in New York Wednesday aboard a boat rather than a plane to emphasize the need to reduce carbon-emission damage to the planet. Mary Altaffer/AP hide caption
In The Vagina Bible, gynecologist Jen Gunter dispels myths about the female body. Meredith Rizzo/NPR hide caption
Every time you give in to your phone or computer that's buzzing with notifications, you pay a price: little by little, you lose your ability to focus. Veronica Grech/Getty Images/Ikon Images hide caption
Among patients age 12 and older in a study of people with mild, persistent asthma, more than half did just as well, or better, on a placebo as they did on a steroid inhaler used twice per day to prevent symptoms. hsyncoban/Getty Images hide caption
All the portraits hanging on the wall inside the Louis Bornstein Family Amphitheater at Brigham and Women's Hospital in Boston on June 12, 2018 were of men, nearly all white. The portraits have since been removed. Pat Greenhouse/Boston Globe via Getty Images hide caption