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As Ukraine enters the second year of the full-scale Russian invasion, we hear about an app through which citizens can help alert defence authorities of air attacks. To help prevent future attacks, the country\\u2019s Air Defence Forces want people to use their phones to report hostile airborne objects. Simply install an app, point your handset at the object, select the category \\u2013 say a drone or a missile - and press the button. It means observers on the ground can pick up objects flying too low for radar detection. Gareth speaks to one of the app\\u2019s developers, Gennadiy Suldin of the tech start up NGO Technari.

Supercomputing predicting weather in Brazil \\u2013 has it worked?\\nThe clear up continues in Sao Paulo following last week\\u2019s devastating floods and landslides, which have claimed dozens of lives. But could these extreme weather events have been better predicted with supercomputers? Angelica Mari has been asking if Brazil\\u2019s supercomputers are super enough?

Spotting illegal farms in Taiwan with citizen tech\\nWith 1500 hectares of farmland lost to illegal usage each year in Taiwan, an environmental advocacy group tried to find ways of bringing this attention to the wider public. Stuck for what to do and not wanting to use conventional means like petitions, they turned to Taiwan\\u2019s volunteer technology community for inspiration. Shiroma Silva went to find out more for Digital Planet.

The programme is presented by Gareth Mitchell with expert commentary from Angelica Mari.\\n\\t\\nStudio Manager: Giles Aspen\\nProducer: Ania Lichtarowicz

(Image: A drone approaches for an attack in Kyiv on 17 October 2022. Credit: Yasuyoshi Chiba/AFP/Getty Images)