This Design Squad animation shows that when an object vibrates, it sets the surrounding air molecules in motion. The resulting sound waves travel to the ear, and the brain interprets them as sound.
For more videos, activities and games visit pbskids.org/designsquad
Earthquakes are unpredictable and can strike with enough force to bring buildings down. Find out what causes earthquakes, why they're so deadly, and what's being done to help buildings sustain their hits.
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About National Geographic’s 101 Series:
Explore and experience the forces that shape the world around us.
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See the awesome destructive power of landslides.
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About National Geographic:
National Geographic is the world's premium destination for critically acclaimed storytelling around science and exploration. Discover amazing wildlife, ancient civilizations, hidden worlds, and the incredible wonders of our Earth. Through world-class scientists, photographers, journalists, and filmmakers, Nat Geo inspires fans of all ages to connect with, explore, and care…
Greenhouse gases are vital to life on Earth, but the growing concentration of certain gases, such as carbon dioxide, is throwing the planet's delicate balance out of whack. NASA is on the case, studying carbon dioxide on a global scale and its effects on our weather and climate.
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Key Indicators: Carbon Dioxide Concentration
http://climate.nasa.gov/key_indicators/#co2
The Carbon Cycle
http://earthobservatory.nasa.gov/Features/CarbonCycle/page1.php
Graphic: The Relentless Rise of…
When it comes to renewable energy, Hawaii stands out, with 15 percent of the state's power coming from solar and wind. Now, the state may be pioneering another renewable form of energy: ocean waves. NewsHour Weekend's Megan Thompson visited a naval base in Hawaii, where researchers are testing a new frontier of wave power technology.
It took 8 months, 150 tests and over 1,000 total working hours to reclaim what is rightfully mine :)
Let's give Fletcher one final surprise and go subscribe to his channel. At this moment he has 2 subs and I'm one of them. https://www.youtube.com/channel/UCxL16LohM2T4mvJCbR6n5Vw
I started a company called CrunchLabs where we build a toy together and then I teach you all the juicy physics for how it works. So if you want to learn to think like an engineer and have really fun time doing it,…
Two Chinese girls, who we'll call Lulu and Nana to protect their privacy, were born healthy a few weeks ago. Their mother Grace started her pregnancy by regular IVF with one difference: right after sending her husband's sperm into her eggs, an embryologist also sent in CRISPR/Cas9 protein and instructions to perform a gene surgery intended to protect the girls from future HIV infection. The surgery reproduces a natural genetic variation shared by more than 100 million people of primarily…
Some Universities try to replicate a 1997 Greek patent! This is the first footage made by BBC World during the execution of the European Project "CLEANMAG : Demonstration and Large Scale application of the magnetic technology for the cleanup of waterborne oil spills" (LIFE99 ENV/GR/567)
The method is basically using a magnetic POROUS material (so is floating all the times) which is olleophillic (sorbs only oily substances and not water). The amount of sorbtion is up to 10 times the weight of…
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