A tweaked yeast can make ethanol from cornstalks and a harvest’s other leftovers
The process could tap underused sources of renewable fuels
![harvesting equipment in a cornfield](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/07/070121_NO_biofuel-corn_feat.jpg?fit=1030%2C580&ssl=1)
The leaves, stalks and spent cobs left behind after a corn harvest could one day become a large source of sustainable energy, a new study suggests.
United Soybean Board