There’s nothing like autumn in New England, every tree a masterpiece with brilliant yellows, oranges, and reds, mixed with tenacious greens. We’re still early in the season, though, so you can still glimpse a wondrous single red leaf on an otherwise entirely green tree. What made it go first? Does it know all the others will follow? Perhaps it’s easy for a leaf to be so fearless, but it’s a great example anyway.