The yellowstone thing is real.
Yellowstone National park is the biggest, most powerful and dangerous volcano in the world. Still very active, it erupts about once every 600,000 years, and its time is just about up. It is so powerful, in fact, that the last time it erupted the earth fell into the gaping hole in the ground created by it, causing a massive crater. If and when it does erupt, the force will be an estimated 1000 times stronger then the Mt St Helens blast, and enough ash will pour out to blanket the whole North american continent with 5 inches.
The scary thing is, In the past decade the center of the volcano has risen an estimated 4-5 feet, and it could erupt at anytime.
When it does, the area about 100 miles in all directions will be completely destryoed, and the US's Farming industry, which accounts for about 50% of the worlds wheat source, will be gone, and we will be without food. In time, the ash will spread throughout the globe, causeing sunlight to be blocked and many plants to die.
This is real, I saw an hour special on the discovery channel about it, and there is nothing we can do to stop it. It could erupt tomorrow, or in 1000 years, but when it does, were fucked