GMO co-founder and permabear Jeremy Grantham says the economy and stock market are "very secondary" to the challenges he sees facing the world. The billionaire investor has pledged the bulk of his fortune to fighting the climate crisis, but Grantham also cites a number of other troubles he finds threatening to society. This interview for Bloomberg Wealth with David Rubenstein was recorded on Aug. 17 on Boston. Like this video? Subscribe to The David Rubenstein Show on YouTube: https://www.youtube.com/channel/UCqsN9MYiu1mKSAsYoF6ppTg Watch the latest episodes of "The David Rubenstein Show: Peer-to-Peer Conversations" here- https://www.bloomberg.com/peer-to-peer Learn more about David: http://www.davidrubenstein.com/ Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness Instagram: https://www.instagram.com/bloombergbusiness/