It can be the next essential step in a global effort against climate change.

Fortunately, the pace of the global effort has picked up in recent months.

Instead, it has simply walked away from the global effort.

Still, both the American and global efforts ought to be intensified.

Some of the mapping work has already been done at American and foreign airports, but a global effort is required.

But the growing global effort to retain highly educated workers may begin to level the playing field.

We have to lead the world in an unprecedented global effort.

There are advantages of having a global effort to fight terrorism.

As a matter of fact, this is a global effort.

About 50 wrote back, joining a global effort that is just beginning to take shape.