Genetically modified crops may help the environment by reducing the need to plough, thereby helping to preserve topsoil. A new study released by the Conservation Technology Information Centre (CTIC) suggests that farmers who give over their land to grow biotech crops that have a built-in tolerance to herbicides reduce the disruption to topsoil through ploughing. Dan Towery, a natural resources specialist at CTIC, said that no-till acres have increased 35% since GM crops were introduced and now total in excess of 55m acres.