Articles on Environment

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Lake Chad once provided adequate livelihoods for 20 million people in Africa, but it lost 90% of its surface area in 30 years. AP Photo/Christophe Ena

Water cooperation is essential when countries share lakes and rivers – yet it’s been deteriorating in many places, with serious consequences

Nationalistic behavior can put people, economies and ecosystems, and even peace, at risk. The US, which paused Columbia River talks with Canada, isn’t the only country shifting in this direction.
Lenticular clouds, like this one over a mountain in Chile, can look like flying saucers. Bilderbuch/Design Pics Editorial/Universal Images Group via Getty Images

How are clouds’ shapes made? A scientist explains the different cloud types and how they help forecast weather

Puffy to wispy, barely there or dark and menacing, clouds come in many shapes and sizes. Each tells a story about what’s going on in the atmosphere.
Mold growths are common in homes, and unless the damage is widespread, they usually aren’t harmful. AP Photo/Matt Rourke

Should I worry about mold growing in my home?

Mold growth happens in damp indoor areas and is difficult to prevent. It can be an annoyance but usually isn’t harmful to your health.

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