During a recent lecture on evolution, I had to explain the differences between three different processes known as geographic, temporal and behavioral isolation. Geographic isolation is the easiest of ...

The spring continues to unfold ahead of schedule. This was seen in March when sap flowed at the beginning, crocuses bloomed by the middle, and the large number and variety of waterfowl were here by ...

Virginia has designated 2015 the Year of the Frog, and the state’s annual Frog and Toad Calling Survey is underway. The spring surveys are full of the sound of the peepers. For the past two years, ...