Tilak Shenoy of Karkala, India wants to know: What causes the Northern Lights?
Nacreous clouds may be stunning, but they're terrible for the environment. That's because these beautiful whisps of color are wreaking havoc on the ozone layer.
In the winter months, more and more people are drawn to the far north of Europe to watch an extraordinary spectacle in the sky at night: the aurora borealis — a light phenomenon that enchants the observer.
A party across six time zones - on the 150th anniversary of its founding on July 1, Canada will hold celebrations across its 13 provinces and territories.
If some parts of Iceland feel overcrowded with tourists, the western regions of the country offer off-the-beaten-track adventures. DW's Elizabeth Grenier tested it out.
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