Thomas Jefferson and Alexander von Humboldt

[@PAVANZYL]

Humboldt was possibly the greatest scientist of all time. It's a pity he is largely forgotten today. He spoke about freeing slaves long before it was fashionable and he draw the link between human activity and the change in the environment. And than was 220 years ago! He wrote prodigiously about so many subjects including geology, botany, zoology and astronomy. An amazing man.

[@georgewhitehead8185]

Two Great Men...Two Great Minds...They are to be remembered, they are to be honored.