Updated

Sun., May 21 at 10 p.m. ET
Hosted by David Asman

Global warming: Most Americans believe it exists and a majority thinks it is a problem, if not a crisis. But is that true?

It's true 2005 was the hottest year on record and there is no question that sea levels have been rising. But this is not a recent phenomenon: global temperature and sea levels have been rising since the end of the last Ice Age.

Today, almost all scientists agree that there is global warming, but there is no scientific consensus about what causes global warming or how it will affect our lives.

In this FOX News special, climatologists, atmospheric scientists, glaciologists, economists, a U.S. Senator and a Bush administration spokesman acknowledge that global warming is happening and will continue in the future. But, these experts say greenhouse gas emissions from burning fossil fuels are only partly to blame for global warming and are not the major force responsible for changes of the Earth’s climate.

The key message from these scientists is that the computer climate modeling predictions for future catastrophes — massive sea level rise, drought, disease, and species extinction — are baseless. Much of the field work, many of the assumptions and most of the computer modeling used to make the alarming predictions do not account for the complexity of climate change in the past, let alone for the future.

It will surprise many people but United States, while not signing the Kyoto Protocol, is spending $5 billion dollars a year on research and development of technologies and solutions to meet the challenges of global warming — more than all of the other countries combined.

We'll also examine:

How much will the Earth warm?

Can climate predictions be made for the decades and centuries to come?

How much of it is man-made and is there anything we can do about it?

Should we be alarmed?

This weekend, join host David Asman for an important FOX News investigation: "Global Warming: The Debate Continues."