Will the world end?
Yes, but not this year. I explained that in a previous answer, yesterday.
http://www.jiskha.com/display.cgi?id=1325400162
If you prefer another authority, try this:
http://news.yahoo.com/apocalypse-not-now-2012-doomsday-predictions-debunked-nasa-055304813.html
The question of whether the world will end is a complex one, as it can be interpreted in various ways. If you are referring to the end of the world as the complete destruction of Earth and all life on it, science suggests that the Earth will eventually cease to exist in its current form. However, the timeline for this event is extremely long, estimated in billions of years.
One scientific theory is that in about 5 billion years, the Sun will exhaust its nuclear fuel and undergo a series of changes, eventually expanding into a red giant. This expansion could disrupt the Earth and potentially consume it entirely. However, it's important to note that this is an extremely long-term projection, and humanity and life as we know it will likely evolve or adapt in some way over such an extended timescale.
It's also worth mentioning that there are other catastrophic events, such as asteroid impacts, pandemics, or natural disasters, that could significantly impact life on Earth. However, humanity has proven to be resilient in the face of challenges throughout history, and scientific advancements may help mitigate or even prevent these threats.
Therefore, while the eventual end of the world is inevitable from a cosmic perspective, the timeline and specific events leading up to it are uncertain. It's essential to focus on the present and work towards ensuring a sustainable future for ourselves and future generations.