Guardian: Runners tread more heavily on the earth than they may have ever imagined, especially it seems if they are wearing a pair of Chinese-made men's size nine Asics gel Kayanos, according to a team of MIT scientists.
A new pair of synthetic running shoes typically generates 30lbs of carbon dioxide emissions, the researchers found.
That's an unusually high carbon footprint for a product that does not use electricity, or require sophisticated components. The researchers said it was equivalent to leaving...