Season 5, Episode 5
Liz investigates an increasingly common and unwelcome guest, the bedbug. Meanwhile, Yan explains why statistics are not to be trusted, and Dallas goes stargazing in California.
Season 5, Episode 4
Liz investigates new stem-cell research that could change the face of organ transplant surgery, Yan tries out the Nocebo effect (the placebo effect's evil twin), and at a memory boot camp Dallas discovers how to remember where he left his keys.
Season 6, Episode 8
What is behind our special relationship with dogs? Liz compares dogs to wolves to see the effects of domestication, and Philippa Forrester discovers how dogs can be good for your health.
Season 6, Episode 3
Liz looks at the safety of digital storage formats and whether the Cloud answers all our problems. Dallas and Jem see what it takes to properly wipe your computer memory.
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