Interesting Things with JC #1660: "The Adams Event" – A 42,000-year-old kauri tree held a carbon record from the Laschamps Excursion, when Earth’s magnetic field weakened, cosmic rays increased, and the upper atmosphere may have changed while the tree kept the evidence ring by ring.

Interesting Things with JC #1660: "The Adams Event" – A 42,000-year-old kauri tree held a carbon record from the Laschamps Excursion, when Earth’s magnetic field weakened, cosmic rays increased, and the upper atmosphere may have changed while the tree kept the evidence ring by ring.

Interesting Things with JC #1660: "The Adams Event" – A 42,000-year-old kauri tree held a carbon record from the Laschamps Excursion, when Earth’s magnetic field weakened, cosmic rays increased, and the upper atmosphere may have changed while the tree kept the evidence ring by ring.

1660: "The Adams Event"

Interesting Things with JC is a new podcast mini series, with highlight on some of the more interesting historical stories, current events as well as under-told stories.

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Interesting Things with JC is a new podcast mini series, with highlight on some of the more interesting historical stories, current events as well as under-told stories.

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1660: "The Adams Event"

1660: "The Adams Event"