Key Findings:

• More than 770 companies and organizations hired some 2,340 lobbyists to work on climate change and spent at least $90 million lobbying in 2008. The American Coalition for Clean Coal Electricity — a group of 48 companies — topped the list of those solely focused on the issue, spending $9.95 million.

• In 2003, 70 percent of the interests weighing in on climate were energy companies and manufacturers. But by 2008, those sectors made up only 45 percent of the total, despite their strong growth, because so many new interests had joined in the fray.