Topsoil's Limited Turnover: A Crisis In Time
Monday, October 6, 2008 - 11:15
in Earth & Climate
Topsoil does not last forever. Records show that topsoil erosion, accelerated by human civilization and conventional agricultural practices, has outpaced long-term soil production. Earth's continents are losing prime agricultural soils even as population growth and increased demand for biofuels claim more from this basic resource.