And a majority of atheists know the Bible better than the majority of Christians. Have you ever read the golden hemorrhoid story in the Bible? That's a good one.
"Then why is it that since something evolves over time, that we are still the same as our generation 100 years ago." We're not. You can take a look at heights and life expectancies and know we're living in different times. As for our genes, they are still evolving. From what I understand some of the brain genes are still undergoing relatively rapid change.
"How is it that we are the only intelligent beings to have evolved to this capacity over millions and billions of years?" That's a great question. A short answer would be that that's a "niche" we've exploited to our success. You could equally as well ask, why is the cheetah so much faster than the other animals? All animals have adapted to their environment.
Generally, when there is an exaggerated characteristic in nature, it's the result of a kind of arms race. The speed of the cheetah fits in this category. The cheetah and its prey (say, impalas), metaphorically trying to outrun each-other. Only the fastest of each generation survive. Over time, they both get faster.
The current thinking is that human brains have been the subject of an arms race of sorts within our own species. People with a mastery of language and culture do better than those who don't. Humans are in competition with each-other and the successful ones have more children and carry on their traits into the next generation. For humans, language, culture, and reasoning are the real measures of success.
I'll pass on the Pangea question. We atheists have trouble taking that one seriously.