What did you learn this week? Let us know in the comments or at education@ngs.org.
This week, we learned …
… a new strain of “super grass” could cut methane emissions from cattle.

Photograph by Howell Walker, National Geographic
… the moon is a more violent place than we thought.

Photograph by NASA/JPL/USGSPhotograph by NASA/JPL/USGS
… The Walking Dead can send students sprinting to class. (Warning: The video contains some violent images.)
… the two questions one of the world’s best musicians asks about everything. (Editor’s pick of the week!)
- Try using Yo Yo Ma’s geographic perspective when you encounter something new: Who did this, and why?
… an Australian farm grows vegetables in the desert using only sunlight and seawater.
… what 50 years of volcanic eruptions looks like, and why the risk of the ‘big one’ in the Pacific Northwest increases every 14 months.

Interactive map by Smithsonian Museum of Natural History—Global Volcanism Program
… there is a self-repairing road in India.
- The self-repairing road relies on nanotechnology. What are some other uses for “self-repairing” aspects of nanotech?
… red-and-blue election maps can be misleading, and we have a better solution.

Map by M.E.J. Newman, courtesy Wikimedia. CC-BY-2.0
… deadly pathogens were repeatedly dispatched by U.S. labs to unsecure sites.

Map by the Government Accountability Office
… what ghost stories reveal about America’s past.
Agriculture based on sunlight and sea water!! Really sounds good at least it will be a good use of sea water… And it’s a very good technic for those countries which suffer from drought.. Through this technology we can save fresh water, electricity, soil and it’s not even harmful to enviournment.. Good luck to those reachers who are working for it..
We can’t control human activities which are responsible for the harm to environment therefore we are trying on caws by creating a new easily disegtionable grass.. Let’s see to how much extant this is gonna be work…