Tag «PLivjPDlt6ApS90YoAu-T8VIj6awyflIym»

Sharks 101 | National Geographic

Sharks 101 | National Geographic

(ominous music) – [Narrator] They glide through the water with unmistakable grace, remnants of an ancient past, they dive and they rise from the ocean’s murky depths to it’s sun-kissed shallows, rousing fear and awe like no other creature in the sea. The world’s biggest living fish is a shark. Of the estimated 34,000 species …

Black Holes 101 | National Geographic

Black Holes 101 | National Geographic

(mysterious music) – [Woman] Black holes are among the most fascinating objects in our universe, and also the most mysterious. A black hole is a region in space where the force of gravity is so strong, not even light, the fastest known entity in our universe, can escape. The boundary of a black hole is …

Lungs 101 | National Geographic

– [Narrator] Breathe in, breathe out. With every breath, the body is replenished and cleansed. A process made possible by two of the body’s most important and delicate organs. The lungs are two major components of the respiratory system. Soft, light, and elastic, these organs are prime for taking in and filling up with air. …

Cancer 101 | National Geographic

Cancer 101 | National Geographic

– [Narrator] Today cancer causes one in every seven deaths worldwide. But how does cancer start, and what is being done to combat it? Our bodies contain trillions of highly specialized cells and each carries genes responsible for regulating cell growth and division. But when a genetic change disrupts this process cells begin to grow …

One Strange Rock – Trailer | National Geographic

One Strange Rock – Trailer | National Geographic

[suspenseful music] I am going to tell you about the most incredible place. And you know what? You’re walking on it. Our planet is literally bursting with life. [echo] [popping] [plunk] [rhythmic vibrations] There’s so much activity, and our planet is right in the middle of it. I really wish that everyone could see the …

Solar Eclipse 101 | National Geographic

Solar Eclipse 101 | National Geographic

– [Narrator] A solar eclipse happens when a new moon moves between the Earth and the sun, blocking some or all of the sun’s rays from reaching the Earth. By cosmic chance, even though the sun is 400 times wider than the moon, it’s also 400 times farther away. Therefore, the two objects appear the …

Origins of the Universe 101 | National Geographic

Origins of the Universe 101 | National Geographic

– [Narrator] The universe is everything. From the tiniest particles, to the largest galaxies, to the very existence of space, time, and life. But how did it all begin? The origin of the universe is the origin of everything. Multiple scientific theories plus creation myths from around the world have tried to explain its mysterious …

Fossils 101 | National Geographic

Fossils 101 | National Geographic

(gentle music) – [Narrator] Like buried treasure, they lie hidden from sight. Echoes of an ancient past, they whisper secrets and tell tales once lost to time. Fossils are remnants or impressions of ancient organisms that are naturally preserved in stone. While there are hundreds of fossil types, they are often grouped into two major …

Earth 101 | National Geographic

Earth 101 | National Geographic

– [Narrator] Earth, the only planet known to maintain life. A product of scientific phenomena and sheer chance. This blue speck in space holds the past, present, and future, of our very existence. (instrumental music) Approximately 4.5 billion years ago, the Earth formed from particles left over from the creation of our sun. Gravity drew …