Biogas production is all in the mixing
David Kilper/WUSTL PhotoMuthanna Al-Dahhan (left) and graduate student Rajneesh Varma are researching effective ways to take agricultural waste and make biofuel out of it.Engineers at Washington University in St. Louis, using an impressive array of imaging and tracking technologies, have determined the importance of mixing in anaerobic digesters for bioenergy production and animal and farm wastes treatment. They are studying ways to take “the smell of money,” as farmers long have termed manure’s odor, and produce biogas from it.
Researchers track snakes to study populations, behavior
Timber rattlesnakes like this one are turning up in subdivision yards and brush thanks to developers who are invading the snakes’ turf.A researcher for Washington University in St. Louis, colleagues at the Saint Louis Zoo and Saint Louis University are tracking timber rattlesnakes in west St. Louis County and neighboring Jefferson County. They are investigating how developing subdivisions invade the snakes’ turf and affect the reptiles.