Are Wisdom Teeth still Useful? + more videos | #aumsum #kids #science #education #children | Summary and Q&A

TL;DR

Wisdom teeth were useful for our ancestors but are now often harmful, airplane windows are oval to prevent cabin stress and potential crashes, migratory birds navigate using the earth's magnetic field and other landmarks, and mint tastes cold because it activates cold sensing receptors.

Key Insights

• 👾 Wisdom teeth were useful in the past but can now cause problems due to evolution and limited space in smaller jaws.
• 💐 Oval airplane windows prevent stress build-up and potential accidents by providing a smoother path for stress to flow through the cabin.
• 🐦 Migratory birds may navigate using the earth's magnetic field, mental maps, and celestial cues.
• 👅 Mint tastes cold because it activates cold sensing receptors rather than taste receptors in our tongue.
• 🖐️ Evolution has played a role in shaping human dental structure and taste preferences.
• 🍘 Cabin stress and cracks in airplane windows can be averted by proper design.
• 🧑‍🏭 Migratory birds' navigation abilities are still being researched, but magnetic field detection and landmark recognition are potential factors.

Transcript

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Questions & Answers

Q: Why have wisdom teeth become less useful over time?

Wisdom teeth became less useful as our jaws became smaller through evolution. The remaining teeth take up most of the available space in the smaller jaw, leaving little room for the wisdom teeth to grow properly, resulting in pain, swelling, decay, and infection when they do grow.

Q: How do airplane windows prevent stress and potential crashes?

By making airplane windows oval instead of square or rectangular, stress flows smoothly through the cabin's material without building up tension at corners. This design prevents cracks in the cabin, reducing the risk of accidents.

Q: How do migratory birds navigate over long distances?

While the exact mechanism is still uncertain, some evidence suggests that migratory birds can detect the earth's magnetic field lines, helping them align with the north-south axis. They may also create a mental map of their route using landmarks such as mountains and rivers and use the position of the sun and stars as navigation cues.

Q: Why does mint taste cold?

Mint tastes cold because it contains menthol, a compound that activates the cold sensing receptors in our tongue instead of the taste receptors. These activated receptors send signals to our brain, creating the perception of cold.

Summary & Key Takeaways

• Wisdom teeth were important for our ancestors who needed them for chewing tough foods, but through evolution, our jaws have become smaller, leaving little space for wisdom teeth to grow properly.

• Airplane windows are oval to prevent stress build-up at corners, which could lead to cracks and accidents, as oval windows provide a smoother path for stress to flow.

• Migratory birds may navigate using the earth's magnetic field lines, creating a mental map of their route, and using the location of the sun and stars.

• Mint tastes cold because it activates cold sensing receptors in our tongue instead of taste receptors, which send signals to our brain, leading to the perception of cold.