There is growing evidence to suggest that Columbus was not the first European to cross the Atlantic ocean to get to North America. It seems that the Vikings had a settlement in what is now Canada around the year 1000. But when exactly? Now a solar storm can pinpoint the date when at least one Viking cut a tree there in 1021CE. Please join astrophysicist in exploring the way scientists figured out this date. 

For a video of this podcast, see here: https://youtu.be/sjuzAX0rGuY