A Scots schoolboy will become the youngest person to bring a petition before MSPs in Holyrood next week.
Callum Isted, from Livingston, is determined to drive single-use plastic out of schools and wants the Scottish Government to replace the disposable bottles of water given to youngsters with their lunches with a "sustainable, reusable, metal" version.
The Dedridge Primary pupil has already walked along the John Muir Way and petitioned West Lothian Council in a bid to have his campaign recognised.
The youngster will make his case heard to MSPs on Holyrood's Citizen Participation and Public Petitions Committee next week, Edinburgh Live reports.
Callum has already drawn praise from the First Minister ahead of his appearance after the matter was raised by former Scottish Conservatives leader Jackson Carlaw during parliamentary questions.
Nicola Sturgeon described the idea as a "really laudable aim and ambition" - and pledged she would try to speak to the youngster.
Committee convener Jackson Carlaw highlighted the youngster's efforts ahead of that meeting as conveners from all the Scottish Parliament committees questioned Ms Sturgeon.
Carlaw told the First Minister: "Next week the Parliament is going to welcome its youngest ever petitioner to the Parliament."
He said Callum had set up a petition to "provide every primary school child in Scotland with a reusable water bottle".
Speaking about the school boy, Mr Carlaw told the First Minister: "He has been very active in his own schools... and he is now looking in his petition to find a means by which this can rolled out to school children across all of Scotland.
"I am sure he would be delighted to hear you commend him on his initiative."
Sturgeon said: "I would commend Callum. Seven years old, the youngest petitioner ever. Well done to him."
She said she will try to "catch a word" with the youngster to "learn more about his efforts to get a reusable water bottle to every young person".
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