Kansas State University offers a few pictures and interesting tidbits on tooth amoebas, the toothbrush-fleeing microscopic parasites found where the teeth meet the gums. These photos and facts are part of a tutorial for...

This is a tree species distribution atlas. It contains information for 80 species in the eastern half of the United States (east of the 100th meridian). The site contains distribution maps and tables for different...

This 52-page guide (about 1 MB) helps identify opportunities to receive financial and technical assistance for efforts that reduce energy costs, improve air quality and public health, and enhance economic development...

This site provides a technical report summarizing hundreds of research papers on this global issue. Offers definitions and presents bycatch by gear type, target species and fishing area. Includes overviews of biological...

Many people may wonder what happens in the vast stretches of the world's oceans. For some, it is simply a matter of "out of sight, out of mind". Fortunately that is not the attitude at the National Center for Ecological...