The mean age of groundwater is about 1000 years, which is why it is so difficult to remediate groundwater pollution.
One might hope that we could require chemical manufacturers to show that a product is safe before it is sold.
Hypoxia is one of the side-effects of modern agronomic systems which strive to feed 7 billion of us with a nutritious diet.
A river is a reflection of the watershed it drains
Composting kitchen waste helps “close the loop” to achieve a sustainable human society where wastes are recycled back into the production of useful goods.
When it’s gone, it will be very difficult to supply phosphorus to crops without major expense, and there is no substitute.
Annually we spread about 20 million tons of road salt in the U.S., and we’ve been doing it since the late 1930s.
When the EPA suggests regulating the emissions of mercury from power plants, the immediate question is how much of the mercury found in downwind environments is from the powerplants and how much is natural.
Fixed nitrogen helps in the growth of crops and forests, but when it escapes from the point of application, it causes a number of environmental problems that should concern us all. For policy makers, nitrogen may be the new carbon.