Recent Posts

Even toxics can act as a generic selection factor in the environment
Posted on 22 Feb 2011 by Thomas H. Clarke, Jr.

One of the themes of this blog has been that virtually anything present in the environment can act as a selection factor influencing the course of evolution. A recent study on fish and PCB's and dioxins illustrates this point. Unfortunately for humans... Read More

Diversity not only provides increased stability to ecological communities, it is more efficient for remediating contamination
Posted on 13 Apr 2011 by Thomas H. Clarke, Jr.

It has long been an axiom of environmental science that a diverse ecological community (aka biodiversity) is more resilient and productive because it stabilizes the ecological system as a whole. This should not be confused with a focus on an individual... Read More

Ninth Circuit rules that owners of storm water systems (e.g., cities, counties, districts) are liable for discharges of polluted stormwater into rivers and ocean
Posted on 11 Mar 2011 by Thomas H. Clarke, Jr.

It is well known that stormwater gathers a variety of pollutants as it flows across the landscape and even through stormwater drainage systems. See, for example, http://cfpub.epa.gov/npdes/home.cfm?program_id=6 and http://www.epa.gov/owow_keep/NPS/index... Read More