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Humanitarian drone corridor in Africa\\nSierra Leone has just launched West Africa\\u2019s first drone corridor \\u2013 it\\u2019s a dedicated channel of airspace for medical delivery drones. UNICEF is part of the project and already has three other humanitarian corridors open globally.

Wikipedia untagging of women\\nDr. Jess Wade from Imperial College London is continuing her mission of getting more female scientists onto Wikipedia, however a few days ago many of her entries were marked as not notable enough to be included. This was done anonymously by another Wiki editor. We hear from Jess and Wikipedia\\u2019s Katherine Maher.

Cats detecting earthquakes\\nCould cats detect earthquakes? Yes says Celeste Labedz a seismologist at Caltech \\u2013 if they are fitted with a motion tracker device. It\\u2019s purely a theoretical idea as she explains on the programme.

Smart tattoos\\nSmart ink that changes colour could lead to medical smart tattoos that monito conditions like diabetes. Harrison Lewis has been finding out more.

(Image: Drones for good. Credit:UNICEF)

Producer: Ania Lichtarowicz