Many of us have felt our consciences pricked in the midst of doing something we know is harming the natural world. But few have thrown their lives into upheaval in the way Dave Bookless did having chucked a few bags of rubbish off a cliff at the end of a holiday.  Twenty five years later, everything from Dave's job to the food on his family's table had changed. He founded A Rocha UK, wrote some influential books, got a PhD, became Director of Theology and Churches for A Rocha International and has spoken to Christians from over 100 countries about God's heart for all he has made. In that time life on earth has thinned dramatically and climate conditions become much worse but Dave has seen the church change and he is hopeful - hopeful because the body of Christ is a force to be reckoned with, and because God's love and faithfulness is eternal and unchanging.