This book presents and analyses two basic assertions Life in the 21st century is threatened by an unprecedented global crisis, which is the result of the exponential increase in the impact of human activity on the earth. Properly understood, the Christian concept of Creation and of human relationships based on God's Covenant, offer the clearest light on the meaning and nature of, and effective response to, the crisis, and the most realistic Hope for the future. It owes much to James Lovelock, the originator of the concept of Gaia - the earth seen as a single coherent living interlocking system - who challenges those of faith to develop "a theology of creation that could include Gaia. Recognise that human rights and needs are not enough; those with faith could accept the Earth as part of God's creation and be troubled by its desecration." This book is written to accept that challenge.