sentences:  In an article in the "Journal of Geophysical Research", scientists studied Lake Vostok in Antarctica and discovered that it may have implications for liquid water still being on Mars.Through their research, scientists came to the conclusion that if Lake Vostok existed before the perennial glaciation began, that it is likely that the lake did not freeze all the way to the bottom.Due to this hypothesis, scientists say that if water had existed before the polar ice caps on Mars, it is likely that there is still liquid water below the ice caps that may even contain evidence of life.