“…The Montreal protocol on ozone depleting compounds provides a good example of the science community providing compelling evidence around which to mobilise and foster commitment to change (table 1). 4344 Citizens have an important role in demanding change or more ambitious action45 through consumer choices, civil society organisations, and social movements (for example, driving the introduction of nature based planning in Sweden, table 1). They can also be a powerful voice demanding urgent and coordinated action across government, as shown by the activism of the AIDS movement (table 1).…”