Tech buff Steve Caplin explains the global IT outage caused by a Crowdstrike software update and Microsoft's extraordinary advice. There's an Italian litter-picking robot dog. Small aerial drones can learn to navigate by studying ants. Other drones can mimic geckos to cling to things. Spray-on trainers for athletes are now a reality, while athletes can also run faster if shielded from wind resistance. There's a crowd-funded Dymo-type printer. And Disney are retiring an animatronic attraction – for fear it will offend alcoholics.