What did you learn this week? This week, we learned …
… your middle-school teacher was wrong about Wikipedia.

… the most effective weapon on the modern battlefield is concrete.

Photograph by Staff Sgt. Manuel J. Martinez, U.S. Air Force
How has concrete been a crucial part of conquest throughout history?
… Canada just launched the first tidal generator in North America, and is planning to phase out coal-powered electricity by 2030.

Illustration by Nick Kaloterakis, National Geographic
Why is tidal a “truly alternative energy” source?
… the steel industry is taking a cue from bamboo.

Photograph by Luis Marden, National Geographic
What other industries are using biomimicry to improve technology?
… the world sounds different than it did a century ago.

Illustration by Stefan Fichtel, National Geographic
How can you help students capture a moment of silence in a noisy world?
… how pesticides are poisoning the developing world.

Photograph by Winfield Parks, National Geographic
Are biopesticides a better solution?
… a new app lets you make sophisticated 3D maps of every room in your home.
Help your students get started on spatial concepts with this classroom mapping exercise!
… there are pirates on the Amazon.
How do the government and industry respond to piracy?
… seasonal wetlands are disappearing, and a soldier is fighting for the most silent space in America.

Photograph by Sam Abell, National Geographic
… the defunct language of nautical flags.

Image courtesy Wikimedia. Public domain.
How are flags important for communication and identity?
… why Burma built a new capital.
Can you find the old (Rangoon) and new (Naypidaw) capitals of Myanmar (Burma)?
Reblogged this on anastasiakalantzi50.