This week, we learned …
… the Nile is sick, and getting sicker. Read of the week!

Photograph courtesy Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC
Navigate the anatomy of the Nile with our interactive map.
… young white people demonstrate a decline in racism after moving to Hawaii.

Photograph of beautiful Hawaiian girls and boys by Cristina Mittermeier, National Geographic
Start surfing Hawaiian culture with our great study guide.
… economic citizenship programs really can make you a citizen of the world.

Photograph by Ivan Kashinsky and Karla Gachet, National Geographic
What has citizenship meant throughout history?
… Toyota is marketing the same car to different ethnic groups with different ads.
How does advertising “market to your brain”?
… school board reelections are tied to achievement of white students, even in heavily minority districts.

Photograph by Lynn Johnson, National Geographic
… “the possibility that some [Vikings] were Muslim cannot be completely ruled out.”

Map by Fernando G. Baptista, National Geographic
How are the Vikings still puzzling us?
… Tokyo is the world’s safest city.

Photograph by Randy Olson, National Geographic
What is the overlap between the world’s safest and most livable cities?
… a canoe churned up by Hurricane Irma may date to the 1600s.

Illustration by W. Langdon Kihn, National Geographic
Where else do canoes help define a historic culture?
… the endangered Liberian greenbul never actually existed.

Photograph by Rushenb, courtesy Wikimedia. CC-BY-SA-3.0
How do you go about identifying a species? We have an activity for that.
… Apple Chief Tim Cook says it’s smarter to learn to code than learn English as a second language.
… scientists have completed the first map of every vertebrate on Earth.

Map by Uri Roll, etc. “The global distribution of tetrapods reveals a need for targeted reptile conservation,” Nature Ecology & Evolution (2017) doi:10.1038/s41559-017-0332-2