Nature-based solutions is a really broad term, encompassing ideas like payments for ecosystem services, using nature in climate mitigation and adaptation, along with broader ideas like learning from nature in design and industry.
A standout stall for me showcased 'Playing for the Planet' – an organisation facilitated by the UN Environment Programme and comprised of some of the biggest video game companies in the world with the aim of integrating climate-based issues into their video games.
Found the 'bonsai landscape' – an exhibition of nature-based solutions put together by NatureScot, Royal Botanic Garden Edinburgh on behalf of environment bodies in Scotland.