Global warming will be a problem for Earth in about a half a billion years, when the sun's luminosity increases to the point where life on earth cannot survive.
Check your homowner's insurance policy to see if a rider for that is included.
The Sun will eventually become a Red Giant when it’s supply of hydrogen runs low and the force of gravity is insufficient to keep the surface at its present diameter.
It will swell up to the orbit of Mars, consuming everything within that space: mercury, Venus, Earth, the Moon and every other rock and dust particle.
Mars will become the new Mercury, a rocky planet hellhole of unimaginable heat, IF it doesn’t get consumed in the maelstrom itself......................