Scott Pelley returns to the Ukrainian town of Bucha to meet with the families of the victims found in the mass grave behind St. Andrew's Orthodox Church. With a combined threat of climate change and the ongoing war in Ukraine triggering a possible global energy crisis, clean and renewable energy is having a moment. 60 MINUTES travels to the old fishing town of Grimsby, England, where the world’s largest offshore wind farm now powers millions of homes a day in the U.K. Correspondent Sharyn Alfonsi looks at how the wind turbines work, the growing industry of offshore wind and how the once distressed town of Grimsby has evolved into the new offshore clean energy powerhouse of Europe.

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