Titan sub and an HIV vaccine
5 Live Science Podcast
00:00
Introduction
The missing Titan sub looks like it imploded, says Chris Smith from the Naked Scientists. A new weapon in the fight to eradicate polio and the telescope that's heading to space to shed new light on dark energy. And we look at where HIV came from and how far away we are from an effective vaccine. Listen now on BBC Sounds or wherever you get your podcasts.
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