... Environment - crusader says we have 25 years left to save the planet . One - man environmental blog now highly popular environmental news site . Steffen inspired by anti - consumerism - says green revolution is essential . Sustainability is key for survival of the planet .
Environment - crusader says we have 25 years left to save the planet . One - man environmental blog now highly popular environmental news site . Steffen inspired by anti - consumerism - says green revolution is essential . Sustainability is key for survival of the planet .