Green Stars: Celebrities like it eco: U2 singer Bono (left) puts money into green agriculture, actress Natalie Portman (right) invests in vegan mushroom leather. Private investors should spread capital more widely and focus on listed companies
Picture:
laif/eyevine/guardian/linda brownlee,
imago images,
laif/redux/the new york times/rozette rago,
laif/redux/the new york times/peter prato