NASA's Curiosity Rover has returned images of what appears to be an ancient streambed. The photos show rocks called conglomerates made up of gravel and sand, which look like they were eroded and transported in water. More at BBC News.
First half guest Dr. Glen MacPherson has researched and documented a Hum heard by people all over the world. The sound is louder indoors than outdoors, and louder late at night than during the afternoon. In the more serious cases, the Hum can affect quality of life; in a number of documented instances, the torment of the noise has been life-altering. MacPherson shared the latest from his scientific investigation into the phenomenon, which seems to indicate that the culprit may be electromagnetic pollution by Very Low Frequency (VLF) waves. This was followed in the second half by Open Lines.