· Air & Climate
Flash floods in steep terrain, explained: rain, rock and runoff
Why steep, narrow valleys turn heavy rain into sudden floods: stalled storms, thin soils, fast runoff, the forecast terms to know and how to stay safe.
Calvin Odom
Calvin looked after air-sampling instruments for a university atmospheric-chemistry group before turning to writing. He explains smoke, ozone, weather and home air in plain numbers – and admits when the numbers are fuzzy.
Pieces by Calvin
· Air & Climate
Radon at home: how to test, what the numbers mean, and how fixes work
Radon is invisible, odorless and common in basements across the country. How home tests work, how to read a result, and what a mitigation system really does.
· Air & Climate
What the Air Quality Index actually means on a smoky day
What the Air Quality Index's six colors mean, why smoke drives the number, why two apps disagree, and how to keep indoor air clean when wildfire haze arrives.