What did you learn this week? We learned …
… why we’re still using bad maps, and what the most beautiful projection in the world is.
… nine questions to help you evaluate the credibility of a news source.

Photograph by Michael Nichols, National Geographic
… cows can text.

Photograph by Franc and Jean Shor, National Geographic
… a traveler’s guide to polite customs—when to shake hands, when to hug, when to kiss.

Photograph by Conrad Poirier, courtesy National Library and Archives of Quebec
… what programs state schools are cutting (and what they’re boosting).

Fresco by Raphael, courtesy Wikimedia. Public domain
… solar power is surging in Africa.

Photograph by Lynn Johnson, National Geographic
… where the world’s tallest tropical trees are.

Photograph by James P. Blair, National Geographic
… the Great Salt Lake is disappearing.

… how to navigate the world’s slums—the “dominant and distinct type of settlement” of the 21st century.

Photograph by Matthieu Paley, National Geographic
… scientists are mapping Yellowstone’s plumbing.

It was really good to know for me the world’s oldest tress bristlecone pines so it’s like parents of mountain ash and redwood forest.. It’s like a competition between these two forests.. Well it’s really shameful to know that humans are big threat to these beautiful things.. We should be competitives to save these not to destroy these forests..
SmaXtec is really useful technique in the field of agriculture hope that in our country people will also be able to use this technology soon..
It was interesting to read about different kind of meeting gesture of different countries.. It was incomplete but still worthy.. Hope to travel these countries and make this useful..lol.. .