Margaret Thatcher was not the most senior politician within the Conservative Party in the UK.
Thatcher helped to put climate change, acid rain and general pollution in the British mainstream in the late 1980s, calling for a global treaty on climate change in 1989
 Thatcherism came to refer to her policies as well as aspects of her ethical outlook and personal style, including moral absolutism, nationalism, liberal individualism, and an uncompromising approach to achieving political goals

