Information: what we are doing to our world -- Overfishing -- Removing forests -- Disrupting the ocean-atmosphere engine -- The perilous future for coral reefs -- Understanding: why we don't comprehend the scale of our problem -- The problem of shifting baselines -- Our unrealistic belief in the balance of nature -- Moving forward: why it matters and what we need to do -- What loss of ecological complexity means for the world -- Reducing our use of fossil fuels -- Slowing growth of the hum.