Vegetables half as nutritious as they were in the 1960s The nutritional value of fruit and vegetables has fallen by up to 50pc since the Sixties because of declining soil quality, according to a new study.
More Than 50 Billion Tons of Top Soil Have Eroded in the Midwest Since farmers began tilling the land in the Midwest 160 years ago, 57.6 billion metric tons of topsoil have eroded, according to a study published recently in Earth's Future.
