Consumer & Gadgets

How do ionic hair dryers work? Can they do what they promise?

If you've been in the market for a new hair dryer, you've likely seen advertising for ionic ones. Some claim to produce negative ions in the millions—with or without the help of added minerals like tourmaline.

Consumer & Gadgets

Dear AI, I'm autistic; should I go to this party?

When people ask ChatGPT and other AI models for advice, they often share deeply personal details in hopes of getting better answers: their age, their gender, their mental health history, even medical diagnoses like autism. ...

Engineering

Depleted oil fields offer hydrogen storage sites

Hydrogen is a clean-burning gas that could help to tackle climate change by reducing our dependence on fossil fuels. But storing and transporting hydrogen is expensive and technically challenging, typically requiring high-pressure ...

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