Incursions, sacrifice, and the impossible choices facing Marvel's heroes as alternate realities begin to destroy each other.

One of the most startling scientific discoveries of recent decades is that physics appears to be fine-tuned for life. This means that for life to be possible, certain numbers in physics had to fall within a certain, very narrow range. One of the examples ...

Throughout the existence of life on Earth, we have always been plagued with the question — are we alone? Regardless of humanity’s contrasting beliefs, there has always existed the undeniable fact that we are alive and something has made us this way.