http://theweek.com/article/index/242235/how-spiral-galaxies-get-their-arms
New supercomputer simulations show how spiral galaxies like the Milky Way get, and keep, their skinny, star-studded arms. Spiral galaxies are quite common in the universe.
Ag minute: Emerald Ash Borer Traps Set in Kansas
http://www.scienceworldreport.com/articles/5991/20130403/plague-emerald-ash-borer-spreads-through-states-killing-trees.htm
In an effort to prevent further spread of emerald ash borer in Kansas, the Kansas Department of Agriculture and the U.S. Department of Agriculture will set 441 traps to detect whether the plant pest is present.
| ||||
No comments:
Post a Comment