Pongamia trees offer renewable energy, plant-based protein

An ancient tree from India is now thriving in groves where citrus trees once flourished in Florida, and could help provide the nation with renewable energy.

As large parts of the Sunshine State's once-famous citrus industry have all but dried up over the past two decades because of two fatal diseases, greening and citrus canker, some farmers are turning to the pongamia tree, a climate-resilient tree with the pote