Eco-adventurer's London Marathon 'tree-athlon' world record attempt a small step towards a "cleaner, greener world"

An eco-adventurer who has previously rowed across the Atlantic Ocean and cycled is aiming to set another world record to raise awareness about the climate crisis and how we can all make an impact to help.

Isaac Kenyon, from Hertfordshire, now based in Devon, will be running this year's London Marathon dressed as a tree.

The 30-year-old is hoping to break the World Record for...