Practical Biology: science for everyone

The mitochondria; primary function being producing ATP energy for the cell.  The mitochondria contains circular DNA which is only passed d...

The green stem of the legume palo verde tree in the Sonoran Desert. Determining how to fertilize a plant can be quite the difficulty.  Y...

Desert grassland surrounding the Tuzigoot ruins.  National Parks website photo. When it comes to living off the land as the ancient Sina...

View from the visitors center trail at Organ Pipe Cactus National Monument.  In this photo jumping cholla, saguaro, and organ pipe cacti c...

Tassel-ear that another garden produced. Back in July we planted several blocks of corn in our college garden.  July is the normal ti...