Celebrate Earth Day by joining us to thank the Earth for all its «ecosystem services.» We forget the huge gift of such services that the Earth provides us everyday. Elliott Campbell, PhD will be our speaker. His job for the State of Maryland includes estimating the value of all the ecosystem services provided to us in Maryland. He has also created and maintained the GPI (Genuine Progress Indicator) for Maryland. Finally, he will explain why we must moderate our expectations and demands for «free» energy that comes directly from the sun. Consider the sun part of the wonderful gift of ecosystem services that we are thanking the Earth for on this day.
Sam B. Hopkins, Moderator