Former second in command of US Forest Service questions agency's accelerated push to thin forests and log big trees in response to fire, insects and climate change. Felling forests, Jim Furnish says, is not a strategy to save them

Just as you can't separate the forest from its trees, you can't extract one strand of the web without stretching, stressing or breaking another. From his basecamp home in Paradise Valley, halfway between Yellowstone and Livingston, retired forest researcher Jesse Logan shares insights about climate change that's already upon us.