Growing plants with colored light changes their nutrient content
Plants have five basic needs – food, water, air, light, and space. Outdoors, plants get everything they need from nature and some…
Day: January 23, 2017
Weights Slide Uphill On a Frictionless Table
Have you ever tried to hang your coat over the corner of table? Unless it snags, it seems to always fall off. This question inspired two…