What alien blood would look like? Apparently, it’s equally likely to be any colour in the rainbow. Earth animals of all kinds have different blood colours already, influenced by the compounds that shuttle oxygen around our bodies. Most vertebrates have red blood from haemoglobin, but it’s possible for aliens to be blue-blooded like octopuses (hemocyanin), green-blooded like earthworms (chlorocruorin), or even translucent if they live in very cold environments.
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Kai Cheng’s professor had a brilliant scheme. In his first lecture, he promised that each lecture would feature a “Lie of the Day”. But why? It made his students more attentive and analytical, poring over every detail of his lecture and making sense of why things were true. It was such a powerful teaching method that his students digested his most technical lectures quite easily because they tried so hard to catch his lie. The kicker? There was no lie in that first lecture; he had lied about that too! Read full article here