This have already been answered in several questions. See the comments for details.
I wonder what would it would take to bring Mars back to life. I've done some Googling and haven't found anybody answering the question 100%. Surely it's not a one-step process like bombarding ice capes with nukes, but combination of all ideas could actually work, and that's my idea:
- First of all, warming up the core to provide an Earth-like magnetic field, or creating an artificial one with some high-tech orbital stations which would require a lot of energy; I believe it's possible.
- Melting ice caps to create an atmosphere that would raise temperatures and escalate to a future domino effect and global Martian warming.
- Planting some algae that could produce oxygen and in the future maybe strawberries.
I want to see your opinions and suggestions beacouse nobody has a complete idea of how to do it as of now.