This week, we learned …
… what’s wrong, and right, about the Census. Resource of the week!

… how Renaissance trade with China changed the world. Another resource of the week!

Illustration by Hervey Garret Smith, National Geographic
How is trade with modern China redefining globalization?
… many teachers and students are skeptical about the growing practice of “robo-grading.”

Photograph by Maggie Steber, National Geographic
The best way to evaluate your own teaching is with a PLN—learn more from one of the best.
… migrating birds are better off with weak immune systems.

Photograph courtesy Pexels. Public domain
Download our new map of bird migration in the Old World.
… Sweden and Norway’s long-running reindeer feud is getting worse.

Photograph of a Swedish reindeer herder by Axel Oberg, National Geographic
… GDP is an invented concept.

What is the world’s gross domestic product?
… the future of Cuban crocodiles.

Photograph by Zanbog, courtesy Wikimedia. CC BY-SA 2.0
Where can you find the Cuban crocodile?
… asteroid mining might just work—if we can figure out how to land on the dang things.

Illustration by Joel Sercel, courtesy NASA
Could you navigate on or around asteroids? Play our game to find out.
… a burned-up library and a little bit of lead are helping historians get a fresh read on Pompeii and Herculaneum.

Illustration by Peter V. Bianchi, National Geographic
What happened to incinerate Herculaneum’s scrolls?
… how to feed the growing population of the Galápagos.

Photograph by Kevin Gepford, courtesy Wikimedia. CC-BY-SA-4.0
Why are the Galápagos so dependent on food imports?
… what 200 years of U.S. immigration looks like.

Take a look at a more conventional display of immigration trends.