All “Sources” of Energy are Not Equal – presentation March 30, 2013 / Dave Andrews / Uncategorized All “Sources” of Energy are Not Equal: The Role of Negawatts – David Olivier
Nitrogen feeds billions of people, but relies on cheap fossil, damages soils, pollutes water with runnoff and only about 20% actually gets picked up by plant root hairs 11 years ago
Little known (or conveniently forgotten) reason for 1926 miners strike recalled – Dr Fred Starr 16 years ago
