SURFSIDE, Fla. — In the year since Champlain Towers South collapsed, families of the 98 people who died have been denied two things they say will help them heal. The first is a reason — why did the 12-story building suddenly implode and crash to the ground in the predawn hours of June 24? That answer is probably still years away. The second is simpler: They wanted to be at the place where it happened.

In 1875, high up in the Andes mountains, hundreds of Peruvian railroad workers began coming down with a strange fever, which was followed by severe joint pain and then death. As the body count soared, alarm set in across the country. Desperate to explain the origins of this strange new malady, a Peruvian medical society announced a contest. A 26-year-old medical student named Daniel Carrión entered. Scientists in Peru had a hunch the fever was connected to verruga peruana, also known as Peruvian warts.

By Emma PetrieArts and culture reporter BBCRobert Woodward (left) and Carl Bernstein (right) spoke to the BBC's Amol RajanUS reporter Carl Bernstein has warned that artificial intelligence (AI) is a "huge force" which poses challenges for the future of journalism. Bernstein and his colleague Bob Woodward were the reporters at the heart of the Watergate scandal and the fall of President Nixon in 1972. AI's rapid take-up has sparked fears of job losses, privacy and the potential to circulate misleading information.

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By Jason G GoldmanFeatures correspondent Getty Images(Credit: Getty Images)If you find yourself sneezing when you come from the dark into the light, you’re not alone. Jason G Goldman investigates why this sudden syndrome strikes. In 1991, a University of Manchester pathologist named Emyr Benbow wrote a letter to the editor of the British Journal of Ophthalmology. "Even trivial symptoms are more easily tolerated if you can put a name to them,"