Roughly once a second, a subatomic particle enters the earth's atmosphere carrying as much energy as a well-thrown rock. Somewhere in the universe, that fact implies, there are forces that can impart to a single proton 100 million times the energy achievable by the most powerful earthbound accelerators. According to new observations, our solar system lies in a neighborhood that's pretty empty. Extremely empty, in fact. To tackle a problem, the basic impulse of our species is to invent a tool to fix it.
Science is a heck of a long way from being able to deliberately alter climate.
If there is a big gun in the arsenal of modern climatology, it is the climate models that play themselves out on the biggest, baddest computers around. But looking back in time is no walk in the park, either. . .