Our planet may be insignificant on a cosmic scale, but the evolution of intelligent life here makes it unusual, it is likely to be unique in our galaxy. Yet we may be on the verge of destroying int, of destroying ourselves - over the next century the future of life in the cosmos could be either jeop...

Our planet may be insignificant on a cosmic scale, but the evolution of intelligent life here makes it unusual, it is likely to be unique in our galaxy. Yet we may be on the verge of destroying int, of destroying ourselves - over the next century the future of life in the cosmos could be either jeopardised - of safeguarded for perpetuity.