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Tests on patients for up to 8 months following their infection with SARS- CoV-2 suggests an immune response can persist. Alessandro Sette and Daniela Weiskopf at the La Jolla Institute in California are optimistic this could mean vaccines would also confer long lasting immunity.

An analysis of samples from Kenya\\u2019s blood banks by Sophie Uyoga at the KEMRI-Wellcome Research Programme reveals far more people in Kenya contracted the virus than was previously know. The figures mean Kenya has similar levels of infection to many European countries.

And a study of mosquitoes by Louis Lambrechts of the Pasteur Institute in Paris reveals why Zika, a virus originating in Africa is much more prevalent in other parts of the world.

We also look at the future of the Nile. Ethiopia is building a massive Dam which will have consequences for Sudan and Egypt who are reliant on the Nile\\u2019s waters says hydrologist Hisham Eldardiry from the University of Washington, Seattle.

Every year, Western Afghanistan is hit with a fierce 120-day wind, and listener Hamid wants to know what causes this phenomenon? He\\u2019s from the city of Herat, where what starts as a gentle breeze in the morning can pick up to become a dangerous gale just a few hours later, devastating buildings and causing power outages.

The BBC\\u2019s Abdullah Elham in Kabul tells us the country has plenty of other \\u2018friendly\\u2019 wind but this one is considered \\u2018fierce\\u2019. CrowdScience talks to Professor Amir Aghakouchak to discover more about the phenomenon, and learns about the pollution problems Herat\\u2019s summer storm causes in neighbouring Iran. But it\\u2019s not all bad news. Professor Lorraine Remer explains how NASA used satellites to map how wind transport Saharan sand almost half way round the world, fertilising the Amazon rainforest.

[IMAGE CREDIT: Getty Images]