After the 2025 Los Angeles fires, California's insurer of last resort needed a $1 billion rescue, its first since 1993. Homeowners who never filed a claim are footing part of the bill.

Record rain overwhelmed small-town Indiana this month. The bigger story is a stormwater system that earned a D on its last national report card, and a $115 billion repair bill nobody's paying.

A carbon credit doesn't expire like a coupon, it gets 'retired' once and only once. Here's how retirement actually works, and the separate durability question it doesn't answer.

Salty, tidal-looking, and bigger than Germany, the Caspian fails the classic sea test on a technicality. Five countries spent 20 years fighting over what to call it instead.

Water's density peaks at 39.2°F, not at freezing. That single anomaly drives the seasonal mixing that keeps a lake's deep water breathing.

When a hurricane's steering winds collapse, the storm can sit in place for days, turning a wind event into a flood catastrophe. Here's why it happens.

Cities don't just run hotter than the countryside — they stay hotter after dark, and the nighttime gap is often wider than the daytime one.

Category number measures wind. It says nothing about how long a hurricane plans to sit still, and stalling is often what turns a storm catastrophic.

A record-breaking heat dome that has killed dozens in Western Europe is sliding east, with Germany and Poland bracing for the weekend peak.

A heat-stressed transformer failure in Brittany cut power to tens of thousands of homes as France logged its hottest day on record and Europe's heatwave spread north.