Wendy Hesketh hosted Matt Davidson, Senior Environmental Scientist with Valhalla Environmental Consulting, Inc.  He spoke about the use of drones for aerial photography, crop monitoring, inventory & asset management, 3D surface modeling & GIS mapping.  His drone has a fixed foam wing with a span of 80cm.  It weighs about one pound, & has a flight time of about 30 minutes on a single battery charge.  The technology around drones is advancing faster than Transport Canada rules governing their use, leading to some problems, particularly with adventurous recreational users.  There’s a huge variety of applications for both civilian & military drones, using infrared & other technologies, in addition to simple high resolution photography.  Images & data collected by fixed wing & helicopter drones may be combined with that gathered by satellites, & “knitted” together.  Matt did his best to simplify the terminology surrounding this complex business, so we Rotarians could understand it!