There are numerous ways of improving concrete structure's environmental performance. An overview of these are presented and exemplified in the present article. They include choice of raw materials, mix design of the concrete, production processes, construction processes, design and use during service life and the end-of-life demolition-crushingreuse. Thus the whole life cycle is considered. This will be the key content of the future fib 3.8 guidelines on green concrete structures which will also include some background information and specific benchmark data.