The environmental crises of the past often seem to disappear—have problems like acid rain and smog been solved?

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Reports are emerging of black rain falling over parts of Iran in the hours ...

A new field study reveals that biochar, a carbon-rich material made from plant residues, can significantly restore soil health and nitrogen availability in forests affected by acid rain. The findings ...