Overview: Click scrubs up to meet the many-armed robot on wheels that's making keyhole surgery more available. We learn how a therapy app and electricity emitting headset could provide better at-home treatment for those living with depression. And we see one of the world’s first trials of an artificial intelligence algorithm to help doctors quickly distinguish between Covid-19 and cancer treatment toxicity on scans. These decisions could be a matter of life and death and are challenging for the human eye to detect.