This week, we learned …
Illustration by Ariel Aberg-Riger, CityLab
What is the U.S. Census?
How is trade with modern China redefining globalization?
Not this kind of testing … More school districts are turning to robo-graders to evaluate student essays. (This student is wired for a sleep deprivation study.)
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.
Maintaining a complex immune response comes with significant costs, and it wasn’t worth it for birds like this common redstart, migrating between Africa and Europe.
Photograph courtesy Pexels. Public domain
Download our new map of bird migration in the Old World.
Norwegian officials are threatening to crack down on Swedish reindeer crossing the border.
Photograph of a Swedish reindeer herder by Axel Oberg, National Geographic
What are reindeer?
What is the world’s gross domestic product?
The division between Cuban and American crocodiles is not so clear.
Photograph by Zanbog, courtesy Wikimedia. CC BY-SA 2.0
Where can you find the Cuban crocodile?
Mining asteroids for water and fuel may propel exploration throughout the solar system.
Illustration by Joel Sercel, courtesy NASA
Could you navigate on or around asteroids? Play our game to find out.
In 79 CE, Mount Vesuvius burned a lot more than scrolls.
Illustration by Peter V. Bianchi, National Geographic
What happened to incinerate Herculaneum’s scrolls?
The Galápagos are not exactly known for their agricultural productivity, although little Galápagos tomatillos are endemic to the islands.
Photograph by Kevin Gepford, courtesy Wikimedia. CC-BY-SA-4.0
Why are the Galápagos so dependent on food imports?
Visualization: Pedro M. Cruz, John Wihbey, Avni Ghael and Felipe Shibuya, Data Storytelling and Exploration Collaborative research team, CAMD Northeastern University. Data: IPUMS.
Take a look at a more conventional display of immigration trends.