Why aliens might look like you: DNA could be a 'universal constant'

Humans and aliens may share the same DNA which could be part of a 'universal structure', according to researchers. The building blocks of life exist in low temperatures and low pressure meaning they are far more likely to flourish than if they were more complex. Whilst no concrete proof has been found yet, the finding makes it more likely they would develop on strange planets than had previously been thought. [I remember my physics professor in college alluding to much the same principle regarding the laws which govern where and how life would appear. Brought to Mindful's attention through Google news feed for "Urantia," which brought up this article thanks to a mention by commenter FizViz, Brighton UK.]