A new eco-friendly plastic made from salmon sperm has been invented by scientists in China. Two short strands of DNA from the sperm were combined with a chemical from vegetable oil that binds them together. What this creates is a squishy material known as hydrogel. From here the gel is then moulded into different shapes and freeze-dried to remove the moisture, which makes it solidify. Researchers have already created a cup, puzzle pieces and a DNA molecule from the eco-friendly plastic.
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