Mass timber is a type of wood being used to build large buildings, like highrises and airports. Jeff Glor traveled to Oregon to understand more about the material, its safety, and whether it's sustainable to use longterm.

"CBS Saturday Morning" cohosts Jeff Glor, Michelle Miller and Dana Jacobson deliver two hours of original reporting and breaking news, as well as profiles of leading figures in culture and the arts. Watch "CBS Saturday Morning" at 7 a.m. ET on CBS and 8 a.m. ET on the CBS News app.

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