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In this edition: We hear how close we are to an HIV vaccine, how severe COVID-19 affects brain power, and how one ecologist is saving Brazil\\u2019s forests.

News: Great Exhibition Road Festival preview \\u2013 We hear from two \\u2018Young Producers\\u2019 for the Great Exhibition Road Festival, who are working on an event called Sonder, which investigates how the summer sun influences culture.

HIV vaccine progress \\u2013 We talk to Professor Robin Shattock about the successes and challenges in creating a successful vaccine for HIV, and what the future could hold.

You can also listen to an extended version of this interview on our Imperial Soundcloud account.

How COVID affects brains \\u2013 We hear from Dr Adam Hampshire how the long-term effect of severe COVID-19 could be a loss of 10 IQ points or the equivalent of 20 years of ageing, as measured by slower reaction times and less accuracy in cognitive tests.

Saving Brazil\\u2019s forests \\u2013 As part of a series on the people behind our world-leading research, we meet Dr Cristina Banks-Leite, whose work is helping preserve biodiversity in Brazil\'s precious forests.