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At night, charged particles from the sun, trapped by Earth’s magnetic field, rain down into the atmosphere. These particles ...

Using a dataset from a radar system called ICEBEAR (Ionospheric Continuous-wave E region Bistatic Experimental Auroral Radar), Magnus Ivarsen and colleagues applied a new algorithm that can detect ...

I felt like I was flying past gridlocked cars without breaking a sweat. Surprising Power for a 50cc Engine I’ll admit I underestimated the engine. Despite being a 50cc, the Icebear Maddog packs enough ...

夏季，有些北极熊不会从斯瓦尔巴群岛的冬季住所迁徙到北极高地的密集流冰和浮冰中，在那里它们可以找到大量的猎物。这 ...