A clue in the Nancy Guthrie case has led to a DNA match but investigators say it's not leading them to a suspect. A man is fighting for his life after reports of “explosions” led first responders to a ...

Spring has officially sprung, and with the greener grass comes warmer weather. The best fans help circulate the old, stuffy winter air and provide a much-needed burst of cooling when you're not quite ...

Abstract: Traditional PV tracking systems aim to orient the surface of the modules as perpendicular as possible to the sun. However, in cloudy sky conditions, this tracking strategy does not maximize ...