- Adafruits
- Alternative Energy
- Arduino
- astrometry
- Astronomy
- Astrophotography - Astronomy - Astrophysics
- Birds in Flight!
- Boston and surrounding 'burbs
- Canadian Air & Space Museum
- Charts and Graphs
- ChumbyChums
- Crazy for Camping!
- dinosaurs!
- Ebikes and Electric Bicycles
- Electric Metering & Equipment
- Electricity Generation
- Enercon
- Exploratorium San Francisco
- FlickrFotoForum
- Galileoscope
- GeoTagging Flickr
- Globe and Mail Reader Submissions
- gnuplot
- History of Canadian Science and Technology
- Industrial Decay
- International Taoist Tai Chi Society
- Kite Aerial Video (KAV)
- League of Evo Doers
- Low Res (Digital Is Not Dead!!)
- Macro
- MAKE
- MOON Shots
- Mount St. Helens
- My Climate Choices
- New York Hall of Science
- Nissan Leaf
- Ontario Science Centre
- Ontario Science Centre Alumni
- Pictures Of The International Space Station (ISS)
- Plug Computing
- PV defects
- R Graph Gallery
- Raspberry Pi
- ROM - Royal Ontario Museum
- Royal Tyrrell Museum
- Science Nerd Depot
- Scotland
- Solar Astrophotography
- Spacing summer-fall 2009 issue
- Spotmatic for the People
- Sudbury Ontario Photos
- Toronto
- Toronto Wildlife
- Torontohenge
- Torontoist Flickr Pool Alumni: Toronto Photos
- Undergrounds and Subways
- Visit Saba - Caribbean
- Wandering At Night
- Wasps
- Watermain Construction on Avenue Road
- Wind Turbines & Wind Farms
- Xeriscaped