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Scientists uncovered the nutrients bees were missing — Colonies surged 15-fold
(www.sciencedaily.com)
This is a most excellent place for technology news and articles.
Perennial plants don't provide the same nutritional yields. Annuals put all their energy into making fruits/seeds that can be harvested. Things like potatoes or onions don't put all their energy into seeds, but they do put a lot into their roots and that's what's harvested.
We need more biodiversity, but we can start by not having brain dead landscaping dictated by office suits.