Next week marks the 100th anniversary of the Greenwood Massacre, a two-day assault in 1921 on a thriving black community in Tulsa, Oklahoma. Scott Pelley reports.  A number of states have introduced bills that would prevent doctors from treating transgender youth. Lesley Stahl reports. And Bill Whitaker reports on Earth's newest volcano, Geldingadalir. These stories on this week's "60 Minutes."

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