Archive for: September 2019

September 16, 2019

Fall Color Science When I think of fall in the Northwoods I envision the forests glowing with multicolored leaves.    Fall color at its peak is indeed a spectacle to behold but few people ever dig deep to ponder what precipitates such a dramatic change every year.  Depending on the tree species the color display will…

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Error: Error validating access token: The session has been invalidated because the user changed their password or Facebook has changed the session for security reasons.
Type: OAuthException
Code: 190
Subcode: 460
Please refer to our Error Message Reference.