Jessica Gorman, whose 18-year-old daughter Sheridan, a Loyola University freshman, was shot and killed in March by a Venezuelan national who was in the U.S. illegally, delivered emotional testimony before Congress on Tuesday during a hearing on sanctuary policies and victims perspectives.

The two suspects accused of climbing the Empire State Building and unfurling a massive banner are escorted by police during a perp walk in New York City. Authorities say Netflix stars Angelina Nikolau and Ivan Kuznetsov scaled the iconic skyscraper before hanging the banner from the top of the building, prompting an emergency response and drawing crowds below. Both were taken into custody and are facing charges in connection with the high-profile stunt.

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Sound waves | Middle school physics | Khan Academy