Middle Palaeolithic artifacts recently excavated from Attirampakkam, an archaeological site in present-day southern India. The artifacts suggest the technique used to make them spread across the world long before researchers previously thought. Sharma Centre for Heritage Education, India/Nature hide caption
Scientists zeroed in on specific neurons in the brains of mice to gain insights into how anxiety is triggered and suppressed. SPL/Science Source hide caption
Brenda Fitzgerald, Georgia Department of Public Health commissioner, and Gov. Nathan Deal respond to questions about Ebola victims at Emory University Hospital and efforts to screen for Ebola in 2014. A report in Politico revealed documents showing several new investments, including in a tobacco company, by Centers for Disease Control and Prevention Director Brenda Fitzgerald. David Tulis/AP hide caption
Tide detergent pods, from Procter & Gamble, are seen at a Safeway store in Wheaton, Md., in 2015. The pace of poisonings in the so-called Tide Pods Challenge is continuing to grow. Gary Cameron/Reuters hide caption
Chemotherapy has made a tremendous difference in survival rates for children with acute lymphoblastic leukemia, the most common type of childhood cancer. FatCamera/Getty Images hide caption
A House commerce committee investigation found that two drug wholesalers had sent more than 20 million pain pills to two pharmacies in the small town of Williamson, W.Va., seen in 2016. Steve Helber/AP hide caption
(From left) Jamie Dimon, CEO of JPMorgan Chase; Warren Buffett, CEO of Berkshire Hathaway; and Jeff Bezos, CEO of Amazon, are creating health care venture, but details are scarce. (From left) Simon Dawson/Bloomberg via Getty Images; Andy Kropa/Invision/AP; Mark Wilson/Getty Images hide caption
Berkshire Hathaway Chairman and CEO Warren Buffett (left) in 2017; Jeff Bezos, CEO of Amazon, in 2013; and JP Morgan Chase Chairman and CEO Jamie Dimon in 2013. Berkshire Hathaway, Amazon and JPMorgan Chase are teaming up to create a health care company announced Tuesday that is "free from profit-making incentives and constraints." AP hide caption
Patients with a history of polyps who need more subsequent tests may have to pick up some of those costs. PeopleImages/Getty Images hide caption
Critics say Idaho's insurance department can't unilaterally ignore federal law, including some of the Affordable Care Act's protections for people with pre-existing conditions. Otto Kitsinger/AP hide caption
An operating room in a hospital in Ethiopia. arnitorfason/Getty Images hide caption
A review of the evidence suggests that alerting people — by text, phone call or other method — when they're due or overdue to get a particular vaccination can boost immunization rates. Mladen Zivkovic/Getty Images hide caption
When Jenna Sauter's youngest son, Axel, tested positive for THC — marijuana's active ingredient — after he was born, she got a home visit from local social services. Sauter says she and her friends don't smoke near their children. Sarah Varney/Kaiser Health News hide caption