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Scientists have grave concerns over ethical and societal impacts of facial-recognition technology. In this surveillance special, we dig into the details.

In this episode:

03:24 Standing up against ‘smart cities’

Cities across the globe are installing thousands of surveillance cameras equipped with facial recognition technology. Although marketed as a way to reduce crime, researchers worry that these systems are ripe for exploitation and are calling for strict regulations on their deployment.

Feature: Resisting the rise of facial recognition

17:44 The ethics of researching facial recognition technology

Despite concerns surrounding consent and use, researchers are still working on facial recognition technology. Can this sort of work be justified? We hear some of the debates going on in academia about this field of research.

Feature: The ethical questions that haunt facial-recognition research

25:02 What do researchers actually think?

Nature surveyed 480 researchers who have published papers on facial recognition, AI and computer science. The results revealed that many researchers think there’s a problem.

This week the whole show focuses on keeping cool in a warming world. First up, host Sarah Crespi talks with Senior News Correspondent Elizabeth Pennisi about the latest research into how to stay safe when things heat up—whether you’re running marathons or fighting fires.

Sarah also talks with Po-Chun Hsu, assistant professor of mechanical engineering and materials science at Duke University, about the future of cooling fabrics for everyday use. It turns out we can save a lot of energy and avoid carbon dioxide emissions by wearing clothing designed to keep us cool in slightly warmer buildings than we’re used to now. But the question is, will cooling clothes ever be “cool”? Visit the whole special issue on cooling.