1. The intelligence of crows.
2. Catalyst, the ABC's science show, on how the mind-body loop can be easily broken.
3. On why games might be a good idea for animals:
A 137 pound orang-utan with a history of mischief short-circuited an electric barrier, then built a makeshift ladder to escape from her enclosure, forcing Adelaide Zoo to be evacuated on one of its busiest days of the year.
Karta, a 27-year-old female, jammed a stick into wires connected to the barrier, then piled up shrubs, roots and debris to create a platform. Using it as a stepladder, she climbed up onto the concrete and glass wall surrounding her enclosure, where she was spotted by a member of the public who raised the alarm.
Zoos spend millions of dollars on keeping animals entertained, and bored animals may become depressed, aggressive or sick. Animals with active minds and bodies are happier and healthier. Zoos already use puzzle games as a substitute for predators' hunting instinct, such as this otter with his fish-flavoured ice-cream:
TIGERS LEOPARDS Vs Pumpkins! - The best video clips are right here
So games for animals may actually save zoos money and help conservation efforts.
4. Aimee Mullins and her 12 pairs of legs.