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Due to the uncertainty of climate science, global warming is quite controversial. However, in order to facilitate policy making, the politicians directly related the issue to CO2 emission based on some incomplete information from the climate science community and accordingly laid down a range of emission reducing measures, which failed thanks to the environmental rules. Besides these attempts, the scientists tried different kinds of technological fixes, which also failed due to the complexity of the climate system itself. It is argued that global warming is not a problem, but a reality which needs to be confronted with by continuous learning. [ABSTRACT FROM AUTHOR]

Ecological engineering is proposed with an aim to obtaining energy in a green and natural way as much as possible by taking full advantage of the symbiotic mechanism of natural system. Theoretically it helps break through the mainstream anthropocentrism,but practically it encounters a lot of failure. Ecological engineering failure is mainly due to the two attributes embedded in technology-- low-level liability and system-level risk,which arise from the tension between de-contextual scientific research paradigms and human beings' real living circumstances. To cope with this tension,it is reasonable for the mankind to keep an openminded attitude and become more adaptive and creative. [ABSTRACT FROM AUTHOR]