00:02these are oysters a common seafood enjoyed by billions of people around the globe however
00:08researchers are now saying one day these could be turned into something more like this the
00:12developers of the material are calling it oyster crete and they say the bio alternative might also
00:17help humanity with our carbon problem this is mukha sisu rayotan who first came up with the
00:22idea while studying architecture at university college london she says she was tasked with
00:26finding alternative building materials when she passed the borough market where she said they
00:30threw out some 5 000 oyster shells every day so we sort of took that shells and like saw the
00:38potential
00:39um in the shells and it's have the same chemical composition as limestone um so that's how
00:50oyster crete begin the process involves crushing the shells and mixing them with sand and clay
00:54however the resulting oyster crete is still 80 percent oyster shells currently their projects
01:00are small creating objects like trays and furniture but they have their site set much larger so these
01:05are sort of our beginning point but the main goal we want to test it in a larger scale application
01:15like
01:15for architectural wall cladding interior design the hope is that someday alternatives like this might
01:22replace traditional concrete of which the manufacturing contributes six percent of global co2 emissions
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