Acid rain is a very broad term. It encompasses not only rain but also other forms of precipitation including fog, hail, sleet, snow, dust, and gas. It can even cause haze or smog, contributing to the ...

The Hayli Gubbi volcano erupted in Ethiopia after nearly 12,000 years, and ash clouds have been drifting over the Middle East, prompting flight cancellations, and leading to authorities issuing ...

Acid rain has been greatly reduced but tons of toxis still drift down each year. MARCH 4, 2013— -- Acid rain commanded as much attention in the 1990s as global warming or the hole in the ozone ...