(Photo by Jon Augustine/QUEST)

If a farmer told you not to pull a weed, would you be worried about him? Maybe you’d insist he get out of the heat and drink some water, or take a vacation.

Believe it or not, that farmer may have good reason to protect his weeds.

In the middle of July 2012, the costliest drought in recorded history had Nebraska in its grip. Not a sprinkle of rain had fallen on Ross Brockley’s farm since June 4, and wouldn’t again until July 31. His half-dozen acres of vegetable gardens were green thanks …read more

Source: KQED QUEST

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