Big change is required, but it can start in small but significant ways. That was the message that development agency World Vision issued for World Environment Day 2009, highlighting one project that symobolises part of the way forward.
The Vatican sought to up its green credentials this week by switching on its massive electricity generating solar panels on the Pope Paul VI Hall. The development is one of a series of intended environmental initiatives.
The biblical story of creation, echoed in the prologue to John's Gospel, famously contains the divine injunction, "Let there be light." But the Church of England says that in an age of eco-cre, a little less light might be needed.