On Earth, where there is salty brine there is life. So I expect they will find something there, even if it is a halobacterium. Maybe even more complex life forms that are halotolerant. I can't wait to see what comes of the tests they are going to run, and if we can get to those streaks to actually test the brine itself. It's an exciting time for Mars watchers.

If you don't care for reality, just wait a while; another will be along shortly. --A Rose