10 Curiosities You Probably Didn’t Learn in Biology Class

The world is a big, wonderful place full of facts we never thought possible. For instance, if a pregnant mouse has a sudden medical issue, the fetus will send stem cells to heal the mother, increasing its chances of survival as well. Fetal stem cells have been found in human mothers as well, dubbed by science as microchimerism.

Bright Side dug up some more marvelous facts about nature and its creations, upholding our yearly resolutions to spread knowledge and joy.

1. The heart slows when your face touches water.

As mammals, we can’t breathe underwater, so as part of the mammalian dive reflex, our heart rate goes down in the water — more so if we go underwater. Even splashing the face with water makes the heart slow down, making it a great way to calm down.

2. Fungus can break down plastic in weeks.

It is said that in the future, there may be more plastic in the ocean than fish. This is why the plastic-eating fungus is great news, and there are around 50 new species of such fungi discovered already. One of the fungi discovered can digest plastic within 2 months, so there’s hope for us yet.

3. Newborn babies can support their own weight.

Newborn babies are strong — strong enough to be able to grasp things in their tiny fists and even support their weight as shown by an experiment done in the nineteenth centuryLouis Robinson witnessed babies able to hang from a walking stick, from 10 seconds to 2 minutes and 35 seconds.

4. Koala fingerprints have been mistaken for human ones.

We’ve been told that our fingerprints are unique, and they are. But the fact remains that even though we share a common ancestor with the koala that was alive 100 million years ago, koala fingerprints look very similar to human fingerprints, as do chimpanzee fingerprints for that matter.

5. Snails can sleep for 3 years.

If you thought bears had it good with hibernation, meet the snail. Snails can sleep rather than hibernate for 3 years at a time without needing food. Of course, this is with some snail species, not all of them. Meanwhile, bears usually hibernate for just 4-8 months.

6. Sloths need 2 weeks to digest food.

Sloths don’t only move in slow motion — even their insides move slowly, ostensibly to preserve energy, which is why a sloth’s digestive system takes 2 weeks to process the food it ate. Plus, most of what it eats is indigestible, giving it very little energy from each slowly chewed mouthful.

On the other end of the spectrum lies the shrew, whose digestion takes mere minutes and is done so fast, not much of it is fully digested. This is the reason why shrews eat their own feces. They can die of starvation in a matter of hours if they don’t eat.

7. Your brain ignores seeing your nose.

We can see our nose all the time, it’s just that the brain tends to ignore it because it’s a constant visual stimulus. It’s the same with people who wear glasses. After a while, they simply stop noticing them.

8. Your forearm is the same length as your foot.

If you don’t have the time to try on a shoe, measure it from your elbow crease to your wrist. If it fits or is just a little smaller, it would fit your foot because the length of your forearm is the same as your foot. And this is just one of many human body ratios that are a marvel in themselves, including the fact that your femur bone is one-quarter your height.

9. You can “see” your white blood cells.

If you look up at a cloudless, bright blue sky and see some wiggly things at the periphery of your vision, you’ve just experienced the blue field entoptic phenomenon. The wiggly things are white blood cells moving in the fine blood vessels moving in front of the retina, at the back of the eye.

10. Human beings have striped skin, but only cats can see it.

Human beings have stripes and patterns on the skin too, and they are called Lines of Blaschko, name eponymously by the scientist who discovered them, Dr. Alfred Blaschko. These are closer to tiger stripes, forming more of a V-pattern fanning out from the center to the extremities. These lines are visible under UV light, a spectrum that cats can see too, which is why cats can see you as a striped being as well.

Which of these facts turned out to be a revelation for you? Share your extreme nature facts with us and blow us away.

Preview photo credit Shutterstock.comShutterstock.com

My Ex Abandoned His Son with Me for a Decade — Now He’s Back, and He Brought a Lawyer

Ten years after disappearing without a word, Sara’s ex-fiancé, Daniel, showed up at her front door with a lawyer, demanding custody of the son he had left behind. As Sara fights to keep the life she’s built with Adam, buried secrets start to surface, and the real reason for Daniel’s sudden return threatens to turn her world upside down.

Yesterday, Adam was getting ready for school upstairs while I enjoyed the last sip of my morning coffee. The doorbell rang, and I thought it might be a neighbor or maybe the mailman delivering a package I’d forgotten about.

But when I opened the door, my heart sank.

It was Daniel.

Source: Midjourney

I hadn’t thought about Daniel in years. Sometimes he’d come to mind when Adam asked about his dad, or in quiet moments before sleep. But this… this was not how I expected to see him again.

He stood there, ten years older but still familiar. Next to him was another man, stiff, in an expensive suit, holding a folder — he was clearly a lawyer.

“Why are you here?” I managed to say, my voice shaky but steady.

Source: Midjourney

Daniel didn’t waste time with greetings. He never did. “I’m here to take back my son.”

My heart stopped. Ten years of silence, and now he thought he could just walk in and take Adam? No, this couldn’t be real.

“You’re not taking him,” I replied, my voice barely a whisper. “You have no right.”

The lawyer stepped forward, handing me the folder. “Ma’am, you’ve been served.”

My hands shook as I took the papers. Words like “custody,” “contest,” and “court” blurred on the page.

Source: Midjourney

The life I’d built with Adam was about to come crashing down.

Ten years ago

Daniel entered my life with his three-year-old son, Adam, from a previous marriage. Daniel was charming but troubled, and I thought I could help him heal.

Source: Midjourney

Adam was the best part of it all. With his big eyes and warm laugh, he brought light into my life. I became his stepmom as Daniel and I built a life together, feeling like I’d found where I belonged.

Then one morning, Daniel was gone. I thought he’d gone for a run or out for coffee, but hours passed. My calls went to voicemail.

Finally, I found a note: “I’m sorry, but I have to go.”

That was all. No reason, no warning. Just those empty words. I sat there in shock, feeling my heart break.

Source: Midjourney

Adam was too young to understand. “Daddy said he had to leave,” he said. “But he said he’d come back one day.”

Days turned into months. Adam stopped asking about his dad, and I stopped pretending to know if he’d return.

After Daniel left, my nightmare began. Child Protective Services got involved, questioning my role as a stepmom. To them, I had no legal right to Adam, despite being the only mother he knew.

I fought hard, enduring sleepless nights and court hearings. They questioned everything, but I refused to give up.

Source: Midjourney

Finally, I won. I adopted Adam, making him mine legally. I promised that no one would ever take him from me again.

But now, after ten years, Daniel was standing on my doorstep, ready to destroy everything I’d built.

The present day

I stared at the papers, feeling rage and fear. Adam’s father. Custody. Court. The words hammered in my mind.

“Mom?” Adam’s small voice broke through. He’d heard everything.

Source: Midjourney

I turned to him, forcing a smile I didn’t feel. “It’s going to be fine,” I lied.

But it wasn’t fine.

I hired a lawyer the next day. I would not let Daniel take Adam without a fight. As the case unfolded, we discovered the truth. Daniel’s return wasn’t about love or regret.

Adam’s grandfather on his mother’s side had recently left a large inheritance, and Daniel had found out. That’s why he was back, aiming for custody to get access to the money.

The realization hit hard. How could I explain to Adam that his father wasn’t here for him, but for his inheritance?

Source: Midjourney

The court date arrived all too soon. My lawyer, Judith, had prepared me, but nothing could ease the pain of facing Daniel, knowing he was trying to tear apart our lives.

Daniel’s lawyer argued that as Adam’s biological father, he had the right to custody, painting Daniel as a man who had made mistakes but was ready to step up.

Mistake? He’d abandoned us.

Judith spoke next, presenting the facts. Daniel hadn’t been in Adam’s life for a decade. He’d never called, visited, or sent a letter. And then Judith revealed the inheritance.

“Mr. Harris’s return is not a coincidence,” she stated. “This is not about reconnecting with his son. This is about money.”

Daniel looked down, his face tight as his lawyer whispered in his ear.

The judge, a calm woman, turned to Adam. “Adam,” she said gently. “You’re thirteen now. I’d like to hear from you.”

Adam glanced nervously at me, then stood, his voice shaky but firm.

Source: Midjourney

“Sara has been my mom,” he began. “She’s the one who’s been there for me. I don’t know the man over there. I want to stay with the only mom I’ve ever known.”

The courtroom went silent.

The judge nodded. “Thank you, Adam. Your decision is clear.”

With that, the gavel struck. Adam would stay with me.

Daniel left without looking back, vanishing from our lives once more.

Outside, Adam turned to me with a small smile. “I’m glad it’s over, Mom.”

“So am I,” I whispered, hugging him tightly.

As we left, Adam looked at me thoughtfully. “What do we do with the inheritance now?”

I smiled. “It’s yours, Adam. For your future, whatever you choose.”

He looked up at me with warmth. “My future is with you, Mom.”

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