Climate Stability?

I’m scared of what might be in store
When larger polar icebergs calve
From Greenland or Antarctic’s shore.
Much higher sea tides than we have?
(An added ice cube in my drink
Can raise it finally past the brink!)

So I’m gung ho for any news
From California’s National Lab
In Livermore on work to fuse
Two nuclei and make a stab,
Like in the H-bomb and the sun,
At force but in a controlled run.

Some energy that binds the two
Is freed when they are one, and then
The sums of all the blends accrue
Gazillion instances again
To heat a chamber, which in turn
Makes generating turbines churn.

Today’s atomic plants don’t fuse.
They split the atoms, leaving waste.
And meltdown dangers, always news,
Mean fuels of choice are carbon-based,
Which warms the climate to the poles
And punctures ozone-layer holes.

The fuel for fusion, hydrogen,
Means H2O is all we’d need.
More power out than power in
Has been the hope but not the deed
Until perhaps when laser beams
Fulfill this holy grail of dreams.