Earth is, by all measures, a giant solar panel. The sun provides us warmth and light of course, but its light also fires the engine that manufactures the basis of life on Earth for everything: food ...

Chlorophyll plays a pivotal role in photosynthesis, which is why plants have evolved to have high chlorophyll levels in their leaves. However, making this pigment is expensive because plants invest a ...

With all this recent rain, coolness and dampness, we seem to have mold problems we never had before. Garage items have mold on them as well as the bathroom tile grout. Can this make us sick? -- D.S., ...