WAYS THAT WE WILL (MOST LIKELY) EVOLVE
As I said, there's no way to know for sure how the human race will evolve. However, by looking at ways that humans have evolved in the past, we are able to get a fairly good idea of where our species is headed. Below are some ways that humans are already evolving, because it's likely that they'll continue to evolve in these ways in the future.
. WE'RE GETTING TALLER
In the past 150 years, according to Scientific American, the "average height of people in industrialized nations has increased [by] approximately 10 centimeters." Most scientists agree that this is a result of improved nutrition and healthcare. It's likely that this trend will continue, but it probably won't continue for long. In the words of William Leonard, a professor that studies anthropology at the Northwestern University of Illinois, "I think, by and large, populations of the industrial world are increasingly sort of reaching the thresholds of our genetic potential." Basically, pretty soon we will not be physically able to grow any taller.
. OUR BRAINS ARE SHRINKING
In the past few thousand years, the human brain has shrunken by about 10%. Some people believe that this is simply because we no longer need to use our brains as much due to technology doing most of the work for us. Another reason that our brains could be shrinking is because babies with smaller brains have smaller heads, making childbirth easier. There are still others who believe the brain is shrinking because we're getting rid of the parts we no longer need, so that our brains will be more efficient.
. OUR MOUTHS ARE GETTING SMALLER
A recent study that focused on the lower jaws and teeth of human fossils from 28,000-6,000 years ago found that our mouths have become smaller due to agriculture. The study's leader, Ron Pinhasi, said that when people started farming "the lower jaw underwent a complex series of shape changes [that corresponded with] the transition to agriculture". Because foods such as bread are softer than the raw meats and vegetables our hunter-gatherer ancestors consumed, people no longer needed a lot of jaw strength to digest foods. Thus, our jaws have become smaller over time and will continue to become smaller as we eat more and more processed/soft foods.