You need to hear this inspiring story!  Jim Mann, a top ultrarunner from Scotland, had this brilliant idea: ask race directors to give runners the option of having a tree planted in their name instead of being given still another t-shirt that won't get used.

"The reason for starting this was 2 fold - I had loads of race t-shirts and kept getting more (I couldn't wear them all and they don't wear out). We wanted to plant more trees and it seemed like a great way to solve a bad problem whilst creating something good."