Dan Simberloff News Today

Nine years ago, a team of scientists studying a violet-blue, thumb-sized butterfly found only two remaining in a rolling landscape of dunes along southern Lake Michigan.

Animals aren’t constrained by human notions of private land or the border lines we draw to separate ourselves from each other.

While humans erect walls and fences, animals aren't constrained by the geopolitical lines we draw to separate ourselves from each other

Robert Frost began his poem “Mending Wall” with the line, “Something there is that doesn’t love a wall.” He could have been speaking for wildlife. Walls and fences fragment their habitat, limit travel for food and mating, block migration routes and cause death.