April Showers Bring... The Science of Spring
Nitrogen, a key nutrient for plants, can cause problems when it leaches into water supplies.
To solve the mystery of why roses are red and violets are blue, scientists are peering into the genes of plant petals.
"Earth sound": the composition made by wind, rain, thunder, crashing waves, bubbling brooks.
Scientists discover how sunflowers use internal circadian, or "clock," timing to follow the sun.
May 1 through June 15: That's the time of year when tornadoes are most common.
In the wilds of New York City--or as wild as you can get that close to skyscrapers--scientists found a new frog species.
In nature, flowers grow in hues that span the rainbow. As this video shows, the colors come from the plants' biochemistry.