Instead of relying on energy-hungry reactors to generate high temperatures and pressure, researchers are looking underground at Earth's natural heat and forces to cook up ammonia for fertilizer.

Forget massive steel tanks—some scientists want to make chemicals with the help of rocks deep beneath Earth’s surface. New research shows that ammonia, a chemical crucial for fertilizer ...

They also found that while government and industry research funding pours into fertilizer application and future markets such as hydrogen power and rare earth elements, there is a dearth of ...

This includes nickel, copper, cobalt, manganese, zinc, gold and other rare-earth metals. Other mining operations target phosphates used as fertilizer in industrial agriculture. So far companies ...

into rare earth concentrate, phosphoric acid - used in many fertilizers - and gypsum. "We see our first stage for phosphates at around 6% (of European demand) and rare earths about 2.5%," Darren ...