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TIL Biomarkers in human sperm have been identified that can indicate a tendency to father children with autism spectrum disorder

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E1dOV TIL Alpaca, llama, and camel "Spit" isn't always just saliva. When very upset, the spit comes from their first stomach, and is green and has a very powerful stench.
QoMX TIL That an American pit bull terrier named Chief saved two women from a deadly cobra, yet died wagging his tail.
rNVLd TIL that PET scans work based on antimatter. The patient is injected with a radioactive material that generates positrons, which annihilate with electrons in the patient’s body. The PET scanner detects the gamma radiation that’s generated.
9lMG TIL that you can survive in space without a spacesuit for around 2 minutes, and the thing that kills you isn’t the change in pressure, it’s simply the lack of oxygen.
LkPX9 TIL of Tyson Steele, a man who accidentally burned his cabin down and then survived three weeks stranded in the Alaskan wilderness with little food and in sub-zero temperatures. "I'm not exactly trained, I've just always been in the outdoors," he said. "Watched a lot of YouTube videos".