In its 150-year history, Paul Knowlton’s farm in Grafton, Mass., has produced vegetables, dairy products and, most recently, hay. The evolution of the farm’s use turned on changing markets and a variable climate. Recently, however, Mr.…
Advances in transparent solar cells mean that soon we might be able to install them into windows and greenhouses. But in the latter case, would they deprive plants of vital sunlight? To find out, researchers at North Carolina State…
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