Half-price Big Mac to fight global warming proves big hit in Japan

A Japanese government website crashed Wednesday as people raced to take up an offer of a half-price McDonald's hamburger in exchange for pledging to fight global warming.

The Japanese unit of the US burger giant Tuesday offered a Big Mac for 150 yen (1.3 dollars), about half the normal price, to anyone demonstrating a commitment to preventing climate change.

McDonald's is one of more than 80 companies offering goods or other prizes to help the government's drive to reduce greenhouse gases.