Dozens of people are recovering this morning after being injured when ammonia gas leaked from a tanker truck in a hotel parking lot in Oklahoma. Sophie Flay has the details; Victor Oquendo reports on a little-noticed provision tucked into the federal spending bill signed by President Trump that could upend a booming industry by banning many THC-infused products, like gummies, drinks, topical pain relief and vapes, now found everywhere from gas stations to wellness shops; Danny New introduces us to a first-grade teacher who's using his guitar and classic songs to inspire his young students; and more on ABC’s GMA First Look.

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