Dr. Andrea Sella of University College London demonstrates how
one of his favourite molecules, carbon dioxide, reacts with water.
It's not a complicated experiment: when more and more CO2 dissolves the indicator in the flask changes colour as the water becomes more acidic. Whilst this make our agua con gas taste great, Sella goes on to explain why the process could also pose an immense threat to ocean biodiversity. As rising levels of CO2 dissolve in our seas many species – especially those in coral ecosystems – are unable to adapt to increasingly acidic waters.
You can find out more about what has become known as "the other carbon problem" in the footnotes below the video or the additional resources to the right. There's also a really useful video on universal indicator if you're wondering how and why the solution changes colour as it becomes more acidic.
Watch the full video with related content here: http://richannel.org/co2-and-the-other-carbon-problem
You can find more of exciting science videos like this at the Royal Institution Channel videos section: http://richannel.org/videos
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