WASHINGTON (CNN) -- Former Republican House Speaker Newt Gingrich and Democratic Sen. John Kerry will meet on Capitol Hill next Tuesday to debate what type of action to take to curb global warming.

The Massachusetts Democrat and his wife, Teresa Heinz Kerry, just wrote a book on this subject, "This Moment on Earth," focusing on people around the country who are using their own innovative ways to conserve energy. The Kerrys criticized Congress and the administration for not doing enough to prevent global warming.

"We need a real debate," Sen. Kerry said in a written statement. "It is time to stop debating fiction writers, oil executives and flat-earth politicians, and actually talk about how to address global climate change."

On his Web site, Gingrich wrote he believes that the world's climate has changed suddenly. He encouraged the federal government to establish environmental standards and he favors new technology to find alternative energy sources. But he still remains a little skeptical on what is actually causing the climate change.

"The history and science of climate change is far more complex and uncertain than the politically driven mass hysteria of scientists who sign on to ads about a topic for which they have no scientific proof," Gingrich wrote on his website.

They will meet on Tuesday, April 10. In Kerry's statement, he said the point of their debate is, "to debate and discuss climate change, the environment and what we need to do to solve these challenges."