How Do You Know if You're Looking for a Solar Particle Event?

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Metal tools were not used at the time by the indigenous american people living in the area. So i brought them with me to the netherlands to the lap and over there, invest e the bits of wood under a microscope. And then you're looking for these up surges of carbon 14, aren't you? These indicators of a solar particle event. That's really done by a mar spectrometery. Then you get the radio carbon concentration of the past for each year. In one of the samples final, we found the uptert in the 20 ninth croth ring counted from the bark edge.

An ancient solar storm helps pinpoint when Vikings lived in the Americas, and using magnets to deftly move non-magnetic metals.

In this episode:

00:53 Pinpointing Viking presence in North America

It’s well-understood that Vikings went to North America around a thousand years ago. However, working out a precise date has proven difficult. Now, thanks to an ancient solar storm, researchers have been able to identify an individual year when Vikings were definitely living on the continent.

Research article: Kuitems et al.

14:57 Research Highlights

How shoulder muscles gave Pterosaurs an aerodynamic edge, and mysterious radio waves coming from near the centre of the Milky Way.

Research Highlight: How ancient reptiles were streamlined for flight

Research Highlight: A mysterious radio signal object is beaming radio waves into the Milky Way

17:45 Magnets move non-magnetic metals

Scientists have created an array of magnets capable of moving non-metallic objects in 6 dimensions. They hope their new approach could one day be used to clean up debris in space.

Research article: Pham et al.

News and Views: Non-magnetic objects induced to move by electromagnets

27:06 What Francis Collin’s retirement means for the US NIH

After 12 years, Francis Collins announced plans to retire from his role as Director of the United States National Institutes of Health. We discuss his legacy and what this means for the world’s biggest public funder of biomedical research.

Editorial: COVID, racism, China: three tests for the next NIH leader

News: Francis Collins to step down at NIH: scientists assess his legacy

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