Since the world is going to end in 2012, this is mere speculation...
Less expensive and more advanced DNA testing will allow screening for diseases and will be used for preventative medical purposes.
The lower costs for DNA identification will also make carrying cash, credit cards and documents such as drivers licenses or passports obsolete.
Human colonies will be established on the moon and Mars.
The current Bush administration will be recognized as the most corrupt government in recorded history with many of its officials still serving time in prison.
