A few decades ago, nobody really questioned vaccines. They were viewed as a standard part of staying healthy and safe. Today, the number of people questioning vaccines risks prolonging a pandemic that has already killed hundreds of thousands of Americans. How we got to this moment didn’t start...

The killers of Berta Caceres had every reason to believe they’d get away with murder. More than 100 other environmental activists in Honduras had been killed in the previous five years, yet almost no one had been punished for the crimes. Bloomberg’s Blood River follows a four-year quest to find...