Siren sounds on nuclear fallout embedded in melting glaciers

Radioactive fallout from nuclear meltdowns and weapons testing is nestled in glaciers across the world, scientists said Wednesday, warning of a potentially hazardous time bomb as rising temperatures melt the icy residue.

2018's biggest volcanic eruption of sulfur dioxide

The Manaro Voui volcano on the island of Ambae in the nation of Vanuatu in the South Pacific Ocean made the 2018 record books. A NASA-NOAA satellite confirmed Manaro Voui had the largest eruption of sulfur dioxide that year.

Pollution controls help red spruce rebound from acid rain

The gray trunks of red spruce trees killed by acid rain once heavily scarred the mountain forests of the Northeast. Now those forests are mostly green, with the crowns of red spruce peeking out of the canopy and saplings ...

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Acid rain

Acid rain is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infrastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the atmosphere to produce acids. In recent years, many governments have introduced laws to reduce these emissions.

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