2019: September - December Political Notes - Richard Stallmanhttp://stallman.org/archives/2019-sep-dec.html
block trade in food and medicine. Nowadays that is happening to Venezuela. It is wrong when the US does this, and wrong when Russia and China do it. 24 December 2019 ( Volunteer d
A Guide to Isaac Asimov's Essayshttp://www.asimovonline.com/oldsite/essay_guide.html
use of plants for food, medicine, and more dating with tree rings tree rings serve as natural calendars /air, light, and photosynthesis can we duplicate photosynthesis? photosynth
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