BBC News
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image captionAbi Thomas, Robert Gordon and Tamsin Constable have all made changes to reduce their carbon footprint
As presidents, prime ministers and premiers met for a virtual summit on Earth Day aimed at cutting carbon emissions, millions across the world are already trying to do their bit to make a difference to the environment.
US President Joe Biden concluded the virtual summit with a pledge to cut his country s emissions to around half of 2005 levels and urged others to do the same.
While most of us may not be able to make policy with the stroke of a pen, many are making changes to live a greener lifestyle.