How 200-year-old whaling logs are helping scientists track climate change

What can centuries-old whaling ship logs tell us about today’s extreme weather? According to scientists, the answer is a lot. They’re using the information recorded by mariners going back hundreds of years to push the frontier of modern-day climate science. Special correspondent Pamela Watts with Rhode Island PBS reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders