Search results for “Qualité de l’air”

How do air filters work?

How do filters remove particles from the air and reduce exposure - especially the small ones? As this Risk Bites primer shows as it dives into the science of aerosol particle capture, it may not be how you think! Air filters are an important tool for protecting health, improving air quality, and

How to find radioactive substances in the air

There are various methods for measuring radioactivity in the air. With the help of trace analysis, even very low concentrations of radioactivity in the air can be detected. In the video, Jacqueline Bieringer explains how to detect radioactive substances in the air. Original: "Federal Office for Rad

Causes of air pollution

Air pollution has many causes. The biggest polluter is energy production, with two-thirds of particulate emissions coming from coal-fired power plants. Road traffic and factory farming in agriculture also contribute to this. Author: 3sat/nano/Labo M/Johan von Mirbach/Chris Caliman/Christoph Valenti

ScienceCasts: Monitoring Air Quality

A global effort to monitor air quality is in the works as the US, Korea, and the European Union prepare to launch geostationary satellites capable of monitoring pollutants and other aerosols. Visit http://science.nasa.gov/ for more. Click here to see more videos: https://alugha.com/NASA

Earth System: Drought and Air Quality

Droughts claim more victims each year than any other natural disaster. Depending on where it occurs and how long it persists, the cost of a drought can run into the billions of dollars. Droughts cause more than economic hardship, however. As this video segment adapted from NASA's Goddard Space Fligh

Noise - causes, effects and solutions

Be it road traffic, neighbors or air traffic: three out of four people in Germany are bothered or annoyed by noise. Our video explains the causes of noise, the effects of noise and how we can reduce it. You can find more information about noise on the UBA website www.umweltbundesamt.de at https://ww

How is wind created?

When air is in motion, wind is created. Temperature differences are responsible for this. When air warms up, it rises and colder air flows in. This is the cool wind that we feel. There is almost always wind on the coasts. Author: ZDF/Pur+/Autorenkombinat/Tobias Schönke/Carina Schulz/Jochen Schmidt

How do tropical deserts form?

When warm, humid air rises and cools down at the equator, the moisture condenses into clouds and it starts to rain. When it sinks again, the air warms up and causes extreme dryness, forming tropical deserts. Author: ZDF/Terra X/I.Zink/Wendevarga/Jochen Schmidt Translation and dubbing: alugha Cli

Do you want to save someone's life | DKMS Germany

Of course you would save someone's life! But why don't you do it? 🤔 It's mega easy! In our video, we'll tell you just three short steps. 💪 It's really easy: open your mouth. Chopsticks in. Be a donor. Order your registration set on dkms.de/yt-registrierung and become a stem cell donor. Maybe you

The culture shock and the 4 stages of adaptation

When we move to another country, we are often exposed to a culture that is different from ours. We have to go through four phases of transition: honeymoon, frustration, adaptation and integration. Some people are enthusiastic about the foreign culture for months, while others are frustrated on the f