Just like any living organism, the soil has its own metabolism. Plants, worms, insects, and most importantly, microorganisms ...

Construction crews began the process of placing the first layers of soil over the Wallis Annenberg Wildlife Crossing on Monday morning. (Al Seib/For The Times) By Seema Mehta.

After a layer of carbon and nitrogen, add more cardboard, if you have enough, wet it down and then cover it thickly — about 8 inches worth — with a mulch of wood chips or leaves.

The basic premise of double digging is to create an extra deep bed of loose soil – 16 to 18 inches, versus the 6 to 8 inches that most tillers create – without inverting the soil layers. In the ...

The very first layers of soil were dropped onto the Wallis Annenberg Wildlife Crossing on Monday morning, marking another major milestone for what will become the world’s largest bridge of its kind.