Blood has been seen throughout history as gross, beautiful, mystical, and even the substance containing the human soul. People eat it, worship with it, are scared of it, and can’t live without it. Let’s look at it from its historic reverence to the science behind it.Are there are real vampires in the world? What are “blood brothers” who were not born from the same parents? What is the ancient medical practice of “bloodletting”? What cultures don’t eat blood and why? Why is our blood red but some sea creatures’ blood is blue? What are the main functions of our blood, and how can we keep our blood healthy? Why are so many people afraid of it and can they get over that?Join us for an intriguing discussion on a topic that might be hard to swallow, but don’t worry… it won’t be too scary. 在整个历史中，鲜血被视为粗暴，美丽，神秘，甚至包含人类灵魂的物质。 人们会吃，崇拜，害怕它，没有它就无法生存。 让我们从历史上对鲜血的尊敬到其背后的科学来进行一些了解。世界上真的有吸血鬼吗？ 不是亲兄弟的“骨肉兄弟”又是什么？ 古老的“放血疗法”是什么？ 哪些文化不吃血，为什么？ 为什么我们的血液是红色的，但是有些海洋生物的血液是蓝色的？ 血液的主要功能是什么？如何保持血液健康？ 为什么这么多人晕血，他们能克服吗？加入我们，就这个有趣的话题进行讨论，但是不用担心……这不会太吓人的。