As people assess their impact on the planet, the BBC's Matt Treacy meets three who took action.
Committee on Climate Change
Roger Harrabin
BBC environment analyst
The comments from the UK's official climate come ahead of a global climate conference in Glasgow.
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Kevin Keane
BBC Scotland's environment correspondent
The Committee on Climate Change says the 2045 date for net-zero emissions is a "step-change in ambition" for Scotland.
Read moreThey want to highlight the fact they are one of the industries worst affected by climate change.
Roger Harrabin
BBC environment analyst
The Committee on Climate Change says the extra tax would help curb the growing demand for air travel.
Read moreThe Global Commission on Adaptation - a group of 34 leaders in politics, business and science say the world urgently needs to be made more "climate change resilient".
Matt McGrath
Environment correspondent
There's a growing consensus that the next year-and-a-half are key in the battle against rising temperatures.
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Roger Harrabin
BBC environment analyst
The UK's "ramshackle" approach means emissions are not being cut fast enough, advisers say,
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