What color is smoke?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
7M ago
The color of smoke depends on what’s burning, and how it’s being burned. Smoke can be black, white, or grey – and chemicals can even make it colorful. This week’s viewer question comes from Harfiz Abu B. from Ghana ..read more
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Simulated eruptions - Explosions in the laboratory
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
7M ago
When does a volcano explode? And when does it erupt more gently, without an explosion? It's a question volcanologists are seeking to answer. No one can look inside a volcanic vent. But laboratory experiments can show how magma erupts and explodes ..read more
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Can you see the stars from the surface of the moon?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
7M ago
Contrary to what photos taken by Apollo astronauts suggest, stars are indeed visible from the moon. But they appear differently to what they do here on Earth ..read more
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What is the difference between fog and clouds?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
8M ago
Clouds and fog both form when water vapor condenses. So what's the difference between them ..read more
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How do solar panels work?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
8M ago
Solar panels convert sunlight into electrical energy, and have turned into a key contributor for making energy supplies more sustainable. But how do they actually work ..read more
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What are the Pillars of Creation?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
9M ago
Some 7,000 light-years from Earth are gigantic cosmic columns of dust and gas. Because new stars are coalescing there, the formation is known as the Pillars of Creation ..read more
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What are contrails and how do they form?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
9M ago
Condensation trails are linear artificial clouds that form from the exhaust of airplanes. Do they have an effect on the climate? This week's viewer question comes from Al Ben M. in Panama ..read more
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What is your blood made of? Where is it formed?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
10M ago
In adults, blood is formed in short, flat bones like the ribs and sternum. This week's viewer question comes from Monica Bustos in Colombia ..read more
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Why are auroras only at the Earth's poles?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
11M ago
Auroras can have very different shapes and colors. They occur when solar particles interact with the Earth's magnetic field. This week's viewer question comes from Rafael Nuñez in Finland ..read more
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Do all animals dream?
Tomorrow Today: The Science Magazine
by DW.COM | Deutsche Welle
11M ago
And how can you tell what they're dreaming? Researchers want to reveal the secrets of animals dreaming by measuring brainwaves of rats for instance ..read more
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