Good answers, De and Zim!
Here is the fascinating specific story from the Youtube from which I got the question!
http://www.youtube.com/watch?v=DxL2HoqLbyA
The Most Misunderstood Concept in Physics
One of the most important, yet least understood, concepts in all of physics is...entropy.
And "The early universe only had about 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 3% of the entropy it has now."
Entropy creates the "arrow of time". In either low or high entropy states, complexity (like life) is not possible.
So..."Let's make use of the low entropy we've got, while we can!" 'Cause it is clearly running out!