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WHEN

Date
Wednesday November 19th, 2014
Time
7:30pm

WHAT

Fish Bones, Lasers, and Heavy Metals: Tales of Environmental Exposure is the title of the Science Café by Dr. Joel Gagnon on Wednesday evening, November 19, 2014, at Canada South Science City in Windsor.
Dr. Gagnon will discuss the use of tiny bones called otoliths or “ear stones” in teleost (bony) fish to reveal a history of heavy-metal pollution during the life of the fish. These bones grow layer by layer as the fish ages, with each layer recording a sample of the environment at that time. Dr. Gagnon uses incredibly short pulses of a laser to vaporize thin layers of the bone that can then be spectroscopically analyzed for content. This allows him to read a history of the aqueous environment in the fish’s habitat.
Dr. Gagnon is an associate professor in the Department of Earth & Environmental Sciences and head of the Metals Laboratory at the Great Lakes Institute for Environmental Research, where he uses femtosecond laser ablation for elemental and isotopic microanalysis of geologic and environmental materials.
As usual at Science Cafés, light refreshments will be served and there is no admission charge. The evening is part of a series of Science Cafés – interactive discussions of important science research for the general public – held at 7:30 PM on the third Wednesday of the month from October through June at Canada South Science City, located at 930 Marion Avenue in Windsor.

WHERE

Location
Canada South Science City
930 Marion Avenue
Windsor, Ontario

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