A meeting at our contract manufacturer in Lowell took me past Pages Brook Pond this morning where a family of beavers have set up their residence. I have watched this pond evolve over twelve years (my first job in Massachusetts had me commuting along this road) and it is remarkable to see how dramatically the landscape has been altered by such tiny creatures. For those who doubt that 7.3 billion humans can change the climate of our planet, they should see what 6 beavers have done in just over a decade to this corner of the world.