On a farm where cows freely relieve themselves as they graze, the accumulation and spread of waste often contaminates soil and waterways.

A new way to convert ammonia to nitrogen gas through a process that could be a step toward ammonia replacing carbon-based fuels.

On a farm where cows freely relieve themselves as they graze, the accumulation and spread of waste often contaminates soil and waterways.

Engineers at the University of Illinois have created a solar-powered electrochemical reaction that not only uses wastewater to make ammonia