- Pre-1970's - There could be life on the planet Mars,
- Viking Landers - Mars is a dead, lifeless planet...let's forget about it!
- 1980's - There could be frozen water at Mars' poles, or it could be frozen carbon dioxide.
- 1990's - Maybe there's frozen water at the Martian poles.
- 2000's - There may have been liquid water on Mars millions of years ago, but it's long since dried up and the planet is still dead
- 2010's - There is liquid flowing water on Mars, but it's really salty and it's doubtful it supports any life.
When will the government stop the cover-up and admit that there's life and a breathable atmosphere on Mars?
