Search This Blog

Sunday, December 8, 2013

Very Nice Post on Cosmic Rays

This week’s Ask Ethan has a very nice post on cosmic rays, their origins, and how they interact with the Earth.  Recommended reading.

http://scienceblogs.com/startswithabang/2013/12/06/ask-ethan-14-the-highest-energy-particles-in-the-universe/

K–12 education in the United States

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/K%E2%80%9312_education_in_the_United_States...