b'Our world was rocked by last week\\u2019s announcement of good radar evidence for a liquid water \\u201clake\\u201d under the Red Planet\\u2019s south pole. \\xa0 Senior Editor Emily Lakdawalla introduces us to the story that is then taken up by two of host Mat Kaplan\\u2019s favorite Martians.\\xa0 The Goddard Space Flight Center\\u2019s James Garvin headed NASA\\u2019s Mars exploration program, while NASA Ames astrobiologist Chris McKay co-founded the Mars Underground more than 35 years ago. Look up!\\xa0 Mars is still close by, and the Perseid meteor shower is around the corner. Bruce Betts gives us the What\\u2019s Up lowdown. Learn more at:\\xa0 \\xa0http://www.planetary.org/multimedia/planetary-radio/show/2018/0801-2018-garvin-mckay-mars-lake.html'