Several things come into play when it comes to determining the colors that we find on leaves of our trees. As our days get shorter and our nights get longer there is a chemical change that happens in ...

One sultry day last July, under skies dimmed by smoke from forest fires burning in Canada, Neil Pederson, 55, a senior forest ecologist with Harvard Forest, searched Green Lakes State Park for old ...

An eastern red cedar catches fire. Controlled fires, such as this one on grassland managed by Kansas State University scientists, are needed to save prairies from becoming woodland and shrubland. A ...

This article is part of The State of Science, a series featuring science stories from public radio stations across the United States. This story, by Celia Llopis-Jepsen, was originally published by ...