Hmm: "How will we all perish" poll lists about eleven options; includes "ice age", omits "global warming"

Apocalypse how? Ways the world might end - TwinCities.com

Ice age: The last ice age ended about 10,000 years ago, according to Kapusta, but it could happen again. "We know these things will happen because they have happened," he said. If the ice sheets creep down to Iowa again, it could happen in as short a time as 100 years, he said. In that case, half of the population of China would have to relocate to India, Kapusta said.

And all of our homes in Minnesota will be under (frozen) water. "My property values will be zero," Kapusta said.
...Eventually our sun will reach the end of its life and start swelling up into a red giant, expanding toward us until we're toast. The oceans will boil off, everything on Earth's surface will be incinerated and the globe itself may just be turned into puffs of hot gas. It should happen in about 5 billion years.