David Suzuki quote: Birds are, especially canaries, are super sensitive to hydrogen sulfide...

Birds are, especially canaries, are super sensitive to hydrogen sulfide and sour gas.

David Suzuki

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"Now" with Bill Moyers, www.pbs.org. August 29, 2003.

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Birds are, especially canaries, are super sensitive to hydrogen sulfide and sour gas. - David Suzuki

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