Physicist Ronald Koopman appeared at a Southern California Air District meeting in 2018 to talk about what seemed like an arcane scientific topic: hydrofluoric acid dispersion and water mitigation testing.

Hydrofluoric acid, also known as hydrogen fluoride or HF, is used to manufacture a range of materials, including refrigerants, gasoline, fluorine-based pesticides and fluoropolymers like those used to make Teflon. It’s also one of the most corrosive and dangerous chemicals known. Koopman conducted experiments with the chemical in the 1980s that warned about the potential of deadly accidents at facilities that use the hazardous materials.

With the Trump administration poised to roll back rules intended to protect workers and communities from catastrophic industrial chemical releases, and a new analysis showing rising rates of chemical accidents, Koopman’s presentation on highly hazardous materials has taken on a new urgency.

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About 14 years ago, Chrissi Kelly lost her sense of smell. She had traveled to the Czech Republic to visit family and caught some virus. Months later, when she still couldn’t smell, she made the rounds to doctors, including her general practitioner and an ear, nose and throat specialist, trying to find answers.

She was diagnosed with anosmia (smell loss), and like many patients with her condition, was told she’d have to learn to live with it. But for her, the loss was catastrophic. “After about six months of complete loss, I was just climbing the walls, and I did not feel like myself anymore,” she says.

Researchers estimate that up to 22 percent of the population lives with smell impairments, like hyposmia (partial smell loss) or anosmia (complete smell loss). And many others live with smell disorders like phantosmia, in which a person picks up phantom smells, or parosmia, where typically pleasant scents like coffee or shampoo begin to register as highly unpleasant (think feces or vomit). Yet the conditions have been poorly understood, underdiagnosed and often minimized by clinicians.

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On a Sunday evening in the middle of Tompkins Square Park in New York City’s East Village, hundreds of people gather in front of a giant papier-mâché face of a woman wearing a crown. She’s the backdrop of a play, her body made up of curtains that look like a dress but serve a dual purpose, allowing actors to scurry on and offstage.

I’m here to watch a performance called “Luddite Recreations,” which is a history of the Luddite movement—a group of artisans and textile workers who resisted the adoption of machines during the early years of the Industrial Revolution in England and whose resistance to being displaced from their work was met with violence by the British monarchy.

It’s one of the opening events of the Summer of Ludd, a weeklong series of talks and activities like how to flirt and date offline, mending, and learning to fight against data centers, all focused on getting people off their phones and into community.

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