greenhouse effect

Everything seems to have something to do with the greenhouse effect these days.

The greenhouse effect, in other words, is not the result of something going wrong.

And where is the greenhouse effect when you need it?

The greenhouse effect means the world is in hot water.

His work, going back 40 years, made him a world authority on the greenhouse effect.

Earth's natural greenhouse effect makes life as we know it possible.

The greenhouse effect has been a subject of international concern for some time.

But there are two problems with it: One, the greenhouse effect is already here.

Most of them believe, however, that the greenhouse effect is to be taken seriously.

You're saying that the greenhouse effect is going to hit suddenly, within ten years.

If there is a substantial greenhouse effect, this will change.

It's the best use of the greenhouse effect I have ever encountered.

That process now seems about to be reversed by the greenhouse effect.

But in common with others, we too are having to endure the greenhouse effect.

In this way, we are helping to create the greenhouse effect.

The greenhouse effect is a little more complicated than your hot car.

Water vapor is an important part of the natural greenhouse effect.

The problem is that recently, the greenhouse effect has become stronger.

Earth, on the other hand, benefited from its greenhouse effect.

This process is the fundamental cause of the greenhouse effect.

"The data cannot be used to say we've got an enhanced greenhouse effect."

"The greenhouse effect has been building up for a century or more," Jane said.

The greenhouse effect has become a topical issue of late.

Nuclear power has a major role to play because it will help combat the greenhouse effect.

A 1991 poll showed that 74 percent of Americans think the greenhouse effect is a problem.