You’ll learn
- Astonishing facts about your skin
- About the power behind the brain’s three-pound weight
- Why pain can be protecting and puzzling
- About two sides of medicine
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first KEY POINT
Have you ever wondered how much you’re worth, not in terms of your skills or assets, but in sheer elemental terms? You might be surprised to learn that all the chemicals making up your body can indeed carry a price tag. Take, for instance, the Royal Society of Chemistry’s experiment where they tallied the cost of elements needed to mimic the well-known actor Benedict Cumberbatch. Why him? Aside from being a guest director at the Cambridge Science Festival, he represented an average human. Altogether, the total cost of building a new human is $151,578.46. But can this number capture our true worth?Every little detail about you, from the curl of your hair to the arch of your foot, stems from evolutionary tweaks and changes over millennia. We have ascended from unicellular beings floating in ancient waters. Each stage of our development may initially seem haphazard, but they all played their role in forming the human life. Our bodies aren’t perfect; they carry the weight of evolution’s trials and errors. However, they’re also a testament to adaptability and resilience. Considering the vast timeline from a single cell to the present complex organisms, our existence is both an unexpected occurrence and a breathtaking wonder.
And while we might occasionally wish for a better, more updated model of ourselves, let’s not forget to celebrate and understand the miracle we are today. So, let’s dive deeper into this incredible journey of self-awareness, unravel the mysteries that reside within us, and grasp how every molecule, every cell, plays a part in our cosmic story. Are you ready to be amazed?
second KEY POINT
Think about our body's protective barriers. We often highlight the strength of our bones or the capabilities of our immune system. However, one of our most impressive protectors, the skin, tends to go unnoticed. This amazing organ, spanning roughly twenty square feet, doesn’t just serve as a protective cover and a hub of sensations, such as the warmth of a hug, the sting of a cat's bite, or the comfort of a soft blanket. Depending on a person's build, our skin weighs between ten to fifteen pounds and is our primary guard against the external world.Bill Bryson once remarked on the irony that the glowing skin we admire is essentially composed of a layer of dead cells. The stratum corneum (the outermost layer of the epidermis) is essentially a land of the dead, constantly shedding around twenty-five thousand flakes every minute. If you’ve ever been frustrated about dust accumulation in your house, you might be intrigued to know that much of it is remnants of you!Deep beneath this surface lies the fertile dermis, home to the skin’s active systems. Here reside blood vessels, nerve fibers, and millions of hair follicles. Apart from growing hair, these follicles secrete a vital oily substance known as sebum. Combined with sweat, this concoction forms a protective layer, sometimes leading to the pesky inconveniences of blackheads and pimples.

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