Teen climate activist Greta Thunberg testifies before Congress

16-year-old Swedish climate activist Greta Thunberg told members of Congress we need to "start treating this crisis like the existential emergency it is." She came to the U.S. to lead protests and participate in a United Nations climate summit next week.

• #news_politics
• #cbsn
• #cbs_news
• #climate_change
• #greta_thunberg
• #united_states_house_of_representatives
• #congress
• #united_states_congress