Electrical conductivity, temperature and pH are monitored in Williams Research Greenhouse at Faith Lutheran Middle School and High School in Las Vegas Friday, Aug. 10, 2018. K.M. Cannon Las Vegas …

Electrical conductivity, temperature and pH are monitored in Williams Research Greenhouse at Faith Lutheran Middle School and High School in Las Vegas Friday, Aug. 10, 2018. K.M. Cannon Las Vegas Review-Journal @KMCannonPhoto