The botanist Adolf Erik Nordenskiold died at the age of 68. Here is all you want to know, and more!
Biography - A Short Wiki
Baron, botanist, mineralogist geologist, and arctic explorer who was a member of the famous Nordenskiöld family. He is best known for leading the Vega expedition along the northern coast of Eurasia, which was the first complete crossing of the Northeast Passage.
He attended the University of Helsinki.
His books include The Voyage of the Vega Round Asia and Europe: With a Historical Review of Previous Journeys Along the North Coast of the Old World.