Deep-sea mining may irreparably harm ocean ... This includes nickel, copper, cobalt, manganese, zinc, gold and other rare-earth metals. Other mining operations target phosphates used as fertilizer in ...

Human urine could well become the gold of cities. A study reveals its untapped potential ... have demonstrated that nitrogen extracted from urine can serve as an effective fertilizer. This method ...

1.7% in Tuesday's trading after the U.S. and Russia reached an agreement to ensure safe Black Sea navigation, and the U.S. agreed to help Russia increase exports of its grain and fertilizer to ...