Science writer and former editor at Nature Philip Ball tells us why humans make and listen to music. He's giving a lecture on the subject at the Royal Institution this week.
Sean Carroll, a theoretical physicist at the California Institute of Technology, discusses his new book From Eternity to Here: The Quest for the Ultimate Theory of Time.
A longer version of that interview is available in our latest Science Weekly Extra podcast.
In the newsjam, we look at Britain's plans for space and how scientists have reconstructed an ancient man's physical features from his hair.
The Observer's science and technology editor Robin McKie and Guardian science correspondent Ian Sample are in the studio to share their wisdom.
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