The greenhouse effect of carbon-dioxide emissions does produce gentle warming if it is not counteracted by unpredictable natural phenomena, but it cannot be measured directly against the volume of such emissions.

We now have the specter that new forests might increase greenhouse warming through methane emissions rather than decrease it by sequestering CO2. This paper will undoubtedly unleash controversy, not the least of which will be political.

The greenhouse effect I am knowing;
To protest right now I am going,
But oh my gee whiz,
I'm going that is,
If only it ever stops snowing.

Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions.

If we decide to keep on the track we're on now and just keep on warming, because of greenhouse gas pollution, then we could easily cook those ice sheets more rapidly.

Given the genocidal belligerence of Iranian threats against Israel, it is hard to take issue with Israel's right to preemptive self-defense.