Life on Mars Not Just a TV Show
Though we have all grown up with Sci Fi stories about Martians, science itself has been skeptical. When signs of fossil life were found on a Martian meteorite in the 1990's, scientists were quick to come up with alternate explanations. The possible bacteria were smaller than Earthly life forms, the detractors said. Since then we have found that Earthly bacteria come in smaller sizes, barely the length of molecules. One by one the objections to Martian life have fallen away.
NEXT: Attitudes on something else have changed too.