Smoke from the Jericho Mountain Fire began to move into the Helena area yesterday evening. Another hot and dry day is expected today, which could lead to increased fire activity.

Fluorescence lidar technology enables a better determination of the origin of particles in the atmosphere. The method can ...

the kind of light we see. If smoke is dense enough, all the visible light hitting it is absorbed, so it appears very dark. Steam, on the other hand, is an excellent reflector of light, so its ...

Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive ...

one that bans any tenants from lighting up. “I think it’ll be easy to find one,” she says. Fueled by health, fire and financial concerns, . Portland has thousands of smoke-free units ...

Potential northern lights viewing in the UP will likely be blocked by wildfire smoke and clouds overnight June 2. Here's a look at what to know.

The most sweeping anti-smoking law in the world gets its first public airing tonight in the Peninsula city of Belmont, which aims to curb the harmful effects of second-hand smoke. Lighting up on a ...