A radical gamble to fight dengue—releasing millions of sterile male mosquitoes—has upended everything scientists thought they knew about disease control.

Concrete is the second most-used substance on Earth after water, and the cement that holds it together is one of the biggest headaches in climate policy. Making cement means heating limestone until it ...

Kiruna’s church went for a walk in August 2025, at half a kilometre an hour, on 224 wheels. The trip took two days and included a daily stop for fika, the Swedish afternoon coffee break, because some ...