By J. Wylie Donald
When one talks of pipelines in recent days one hears nearly an incessant buzz about Keystone XL, as if that is where the real action is. But it isn't, notwithstanding the histrionics over President Obama's veto of S.1...
A keystone species is one that "influences the ecological composition, structure, or functioning of its community far more than its abundance would suggest." (See http://glossary.eea.europa.eu/terminology/concept_html?term=keystone%20species...