Last year, health officials in Seattle decided to stop requiring bicyclists to wear helmets. Independent research found that nearly half of Seattle’s helmet tickets in recent years went to unhoused ...

ABC News' Rebecca Jarvis speaks with Airbnb CEO Brian Chesky about how the company is bringing people together and why he thinks AI will make people want more ‘real world’ connections. In some of the ...

Guest: Dr. Paulina Rowińska is a mathematician, writer, science journalist and author of Mapmatics: A Mathematician's Guide to Navigating the World. Transcripts for each episode are available within 1 ...

Oct. 12, 2025 — Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects of viscosity in their simulation, they revealed a ...

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