On Sunday, I posted a short iPhone video of an osprey nest next to an 800 kw wind turbine at River John, Nova Scotia, to make the tongue-in-cheek point that someone forgot to tell the osprey about the perils of infrasound and shadow flicker. The point was tongue-in-cheek in the sense that I have no way of knowing whether young birds successfully fledged from the nest, but serious in the sense that I think health arguments against wind turbines are largely spurious. Bruce Wark, former reporter, CBC radio producer, and King's journalism professor, thinks I overlooked the most obvious threat wind...

This winter, Contrarian hosted an interesting discussion about whether Down syndrome needs a cure. Now reader Denis Falvy offers an intriguing footnote. It seems that people with Down syndrome rarely get tumors. Recent research at Children's Hospital in Boston, reported in the journal Nature, suggests that a gene (gene 231) on the extra chromosome (chromosome 21) carried by people with DS may inhibit cancer by blocking the activity of a protein tumors need to grow. Money quote: The gene suppresses the growth of new blood vessels that cancers need by blocking the activity of the protein calcineurin, suggesting a new target for...