A couple of blasts from the past....

The NASA Earth Observatory has 2 recent images and information pages that take me back to case studies I used to teach for years...

The first is the Gran Carajas mine in Brazil. One of those videos that I used to show every year, then the laminated A3 folded sheets with maps and more information...

The second is the return of El Nino....

Go to this NASA EARTH OBSERVATORY page to see the Cran Carajas image, and link to El Nino.

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