September 21, 2021

In his new book, "How to Talk to a Science Denier," Lee McIntyre examines how the anti-vaccine movement, climate-denial, the flat earth movement and other conspiracies have gained a dangerous foothold in society. He speaks with Michel Martin about what we can do as conspiracy theories gain ground.

Thousands of Haitian migrants are being met with force as they try to reach the U.S. after a series of disasters struck their homeland. To discuss the situation at the border and the systemic issues it exposes, Christiane speaks with immigration attorney Bridget Cambria, co-founder of Aldea, an advocacy group that provides legal and social services to vulnerable immigrants to the United States.

President Biden addressed the U.N. General Assembly today, using his time at the podium to talk up alliances, global cooperation and the U.S. commitment to leadership. Meanwhile America's ally France, having been cut out of a submarine deal in the Pacific, is full of resentment over what they are calling a crisis and a breach of trust. Christiane speaks with two guests to discuss.