A Soviet blockade around Berlin cut the divided city off from the West. But in 1948 U.S. and British pilots began to fly food, fuel and medicine to the Allied sectors.

A “purity” movement in the 90s led by evangelical Christians promoted a strict view of abstinence before marriage. But two decades later, followers are grappling with unforeseen aftershocks.

Scientists who venture into rainforests and bat caves explain how viruses, like Covid-19, spill over from animals to people, and what we must do to stop the next pandemic.

The coronavirus pandemic has highlighted racial disparities with roots in the past.