THEY WERE WRONG, IT'S NOT 2012, IT'S 2050.

The world is ending faster than we ever thought it would. You may not believe it, but we only have 25 YEARS LEFT, that is (estimated time) until Earth's support forms run out.

What is there left to do??

There isn't much left. If everyone on the planet agrees to go vegetarian, it will help, but that still isn't enough. We need large production corporations to use more efficient production methods, even if they're more expensive, and people to stop polluting the ocean and ground (that means landfills) with garbage. You wanna live past 2050? Stop pollution.

How accurate is this estimation?

The estimation was carefully calculated with many values (calculated non-renewable resource use, mining, CO2 in the atmosphere, fresh water, food/population ratio, etc) to ensure accuracy. Don't worry though, it is still an ESTIMATE.