Juana Summers

Yeah, Aya says that understanding how bats navigate could help engineers design flying robots that could swarm, which might be helpful in agriculture or environmental sensing.

Yeah, Aya says that understanding how bats navigate could help engineers design flying robots that could swarm, which might be helpful in agriculture or environmental sensing.

Yeah, Aya says that understanding how bats navigate could help engineers design flying robots that could swarm, which might be helpful in agriculture or environmental sensing.

That's Nora Abdallah speaking with NPR. Her husband, Columbia graduate student and legal U.S. resident Mahmoud Khalil, was arrested by Immigration and Customs Enforcement agents on the evening of March 8th.

That's Nora Abdallah speaking with NPR. Her husband, Columbia graduate student and legal U.S. resident Mahmoud Khalil, was arrested by Immigration and Customs Enforcement agents on the evening of March 8th.

That's Nora Abdallah speaking with NPR. Her husband, Columbia graduate student and legal U.S. resident Mahmoud Khalil, was arrested by Immigration and Customs Enforcement agents on the evening of March 8th.

Khalil was taken to a detention facility in Louisiana and has been there since. He has not been charged with a crime. The government has instead accused him of being a Hamas sympathizer, a claim his wife vehemently denies.

Khalil was taken to a detention facility in Louisiana and has been there since. He has not been charged with a crime. The government has instead accused him of being a Hamas sympathizer, a claim his wife vehemently denies.

Khalil was taken to a detention facility in Louisiana and has been there since. He has not been charged with a crime. The government has instead accused him of being a Hamas sympathizer, a claim his wife vehemently denies.

was not right. Since his arrest, the government has also alleged in a court document that he failed to disclose some of his employment history in his application for a green card. And Mahmoud Khalil is not the only Columbia student for whom federal agents have come knocking.

was not right. Since his arrest, the government has also alleged in a court document that he failed to disclose some of his employment history in his application for a green card. And Mahmoud Khalil is not the only Columbia student for whom federal agents have come knocking.

was not right. Since his arrest, the government has also alleged in a court document that he failed to disclose some of his employment history in his application for a green card. And Mahmoud Khalil is not the only Columbia student for whom federal agents have come knocking.

Ranjani Sreenivasan is a 37-year-old architect who was set to finish a doctoral program at Columbia in May when she was notified that her visa had been revoked. She told NPR's Here and Now that the Department of Homeland Security is accusing her of advocating for violence and terrorism. She'd attended a handful of protests against killings of civilians in the war between Israel and Hamas.

Ranjani Sreenivasan is a 37-year-old architect who was set to finish a doctoral program at Columbia in May when she was notified that her visa had been revoked. She told NPR's Here and Now that the Department of Homeland Security is accusing her of advocating for violence and terrorism. She'd attended a handful of protests against killings of civilians in the war between Israel and Hamas.

Ranjani Sreenivasan is a 37-year-old architect who was set to finish a doctoral program at Columbia in May when she was notified that her visa had been revoked. She told NPR's Here and Now that the Department of Homeland Security is accusing her of advocating for violence and terrorism. She'd attended a handful of protests against killings of civilians in the war between Israel and Hamas.

Rather than risk arrest, she fled to Canada.

Rather than risk arrest, she fled to Canada.

Rather than risk arrest, she fled to Canada.

Consider this. The Trump administration's efforts to deport foreign-born students have set off alarm bells about where and when the First Amendment is applied. But it's not the first time our government has tried to deport student activists for pro-Palestinian speech. Almost 40 years ago, it tried to do the same thing on different legal grounds.

Consider this. The Trump administration's efforts to deport foreign-born students have set off alarm bells about where and when the First Amendment is applied. But it's not the first time our government has tried to deport student activists for pro-Palestinian speech. Almost 40 years ago, it tried to do the same thing on different legal grounds.