The Associated Press: Wis. US Sen. hopeful: Global warming 'unproven'

http://www.google.com/hostednews/ap/article/ALeqM5gTsvhh_c3jfIkiJLRl3SdgzdHocgD9IIJACG0?docId=D9IIJACG0

MILWAUKEE — Wisconsin U.S. Senate candidate Ron Johnson says global warming is an "unproven" science that shouldn't dictate U.S. policies.

The Republican business owner said Thursday that domestic efforts to curtail global warming would hurt American businesses and send jobs overseas.