Here in California – and in many parts of the world – water scarcity is a way of life. Thankfully, most of the water that we use indoors can be safely reused for outdoor irrigation and toilet flushing. This is called grey water. Grey water is used water from sinks, showers and washing machines. It … Continue reading How can homeowners recycle grey water?
A landslide is made of mud and other earth materials that fall down a slope, usually after a period of heavy rain. When buildings or other infrastructure balance on soils that cannot effectively capture and react to precipitation, landslides may occur. The weight of the water and the steep incline push the mud and dirt … Continue reading Why do landslides happen?
Soils can look like they are a homogeneous material. But in reality, soil contains solid particles of different sizes and different types. Some of the particles are minerals, and others are organic matter. There are spaces between the particles called pores. These pores may be filled with air or water. Soil is a mixture of … Continue reading What is soil made of?
Soils are a finite resource, and only renew over centuries or millennia. Soils provide many “services” to humans, yet it is largely an ignored resource. Some of the services soils provide are: Capturing and cleaning rain and snowfall,Providing structure to grow our food,Holding carbon in the form of organic matter (carbon sequestration), andProviding a home … Continue reading How do soils and humans impact one another?
Particles of sandy soils generally have a mean diameter between 0.05mm and 2mm. They are the largest of soil particle types – the smaller particles are called silt and clay. A soil that is good for farming consists of a mixture of these particles, allowing for healthy crops. Loam is a particularly good type of … Continue reading How can farmers grow crops in more coarse soils?
Lead's use may be – but we still have a lead problem, especially in urban areas. The first extraction of the metal lead from ores was ancient – around 7,000 BCE. In the millennia since, Egyptians have used it in cosmetics, Romans in their pipes, the British in their ammunition, and now every society in … Continue reading Is lead contamination ancient history?
Wetlands are fun places to get muddy, enjoy the outdoors, and listen for birdsongs. They provide important habitat for wildlife, and for recreation. You’ve likely seen wetlands on the fringes of lakes, on river floodplains, along the coast, and anywhere else where water accumulates on the landscape. Wetlands are found at the intersection of earth/soil … Continue reading What’s being done to restore wetlands?
As you know, many states have a designated state bird, flower, fish, tree, rock, etc. And, many states also have a state soil – one that has significance or is important to the state. We’ve previously written about New Jersey’s state soil, Downer. The San Joaquin is the official state soil of California. Let’s explore … Continue reading What is the California state soil?
There are many reasons why soil scientists dig soil pits. They all revolve around collecting information to address a question or a management problem. And sometimes they hold more questions than answers. Bald Ridge part of Bighorn National Forest, is located at about 10,000 feet in elevation. Credit: Ryan Schroeder In the summer of 2017, … Continue reading How can soil scientists tell the history of a location from a soil pit?
The ground beneath your feet might seem like a uniform material, but it’s really a mixture of soil particles, organic matter, and other mineral/organic components. For a soil to be healthy, it must have good structure. Soil is made up of a combination of primary particles - sand, silt and clay. These particles can be … Continue reading What are soil aggregates?