Contaminación estadounidense made in China.

http://www.newscientist.com/article/dn24909-made-in-china-up-to-a-quarter-of-california-smog.html?goback=%2Egde_4962349_member_5833452722195562499#%2EUuX7Q9L07is%2Eemail

Made in China: Up to a quarter of California smog

Fernando Follos PliegoEnvironmental and Quality Risk Manager

Made in China: Up to a quarter of California smognewscientist.com

The US has outsourced many of its production lines to China and, in return, global winds are exporting the Chinese factories' pollution right back.

Susana Prieto Veguillas