Related topics: air pollution · air quality · pollution

Surprising insights about debris flows on Mars

The period that liquid water was present on the surface of Mars may have been shorter than previously thought. Channel landforms called gullies, previously thought to be formed exclusively by liquid water, can also be formed ...

Smog and sick kids: Thai pupils endure air pollution

Hundreds of Thai children strain to sing the national anthem, reedy voices and fragile lungs competing against eight lanes of belching traffic next to their school's open atrium in central Bangkok.

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