So what happens after the Kyoto Protocol expires in 2012? Global warming won't just disappear. In fact, most countries can't even hope to be CO2-neutral until at least 2050.

In response to that very question, 153 chief executives have signed the Business Leadership Platform, promising to not only enact climate change initiatives now, but also well after the Kyoto protocol expires.

Some of the signing companies include Cadbury Schweppes, Coca-Cola, Dupont, Ericsson, Fuji Xerox, Ikea, Lego, Manpower, Pfizer, SAP, Speak Out, and Unilever. You can get the full list, and more details on the platform, at the Global Compact website.

What the Statement is NOT

The Statement is NOT a new requirement for Global Compact participation. It is an optional platform for active Global Compact participants who wish to advance climate change solutions. A decision to abstain from the Statement will not in any way be viewed as an indication of a company's commitment to the Global Compact or impact its standing in the initiative. This Statement seeks to provide a practical platform for advancing the Global Compact's environmental principles. At the same time, other measures taken by companies to preserve the environment and to address their carbon footprint will continue to be equally appreciated under the UN Global Compact.