(CBS DETROIT) - Phosphorus is a mineral that plants need to grow and complete its life cycle. But in the United States, scientists say phosphorus in our soil is going to deplete within this century.

Phosphorus is essential for undisturbed plant growth and development. However, in many soils, phosphorus is only poorly available. One mechanism used by plants to increase phosphorus availability is ...

On an overcast day, Roger Sylvester-Bradley walks along a hawthorn hedge, collecting a thick rind of mud on his leather boots, before stepping into a gently sloping field of barley. He stoops to pluck ...