Monthly Archives: March 2023

(Click on the following link to listen to an audio version of this blog … Another Look at Tumbleweeds Last summer, when we were in Moab, Utah, we spent one afternoon at a reservoir south of town. There was a … Continue reading →

(Click on the following link to listen to an audio version of this blog .. DNA is Everywhere A living organism contains a great deal of DNA. In a single human cell, for example, there is, if you uncoiled and stretched … Continue reading →

(Click on the following link to listen to an audio version of this blog … The scent of rain I have written about petrichor and geosmin before. In 2012, I described their earthy-scent rising from our field in Pennsylvania after … Continue reading →

(Click on the following link to listen to an audio version of this blog …. Old Growth Forests (This essay was originally part of my now defunct Between Stones and Trees website) “Old Growth Forests” (also called “virgin forests” or … Continue reading →

(Click on the following link to lsten to an audio version of this blog …. A cave in Pennsylvania (This essay was originally part of my now defunct Between Stones and Trees website) Western Pennsylvania has many caves. Some of … Continue reading →