Cold molecular clouds as cosmic ray detectors

The ionization of the neutral gas in an interstellar molecular cloud plays a key role in the cloud's evolution, helping to regulate the heating and cooling processes, the chemistry and molecule formation, and coupling the ...

Southwest Iceland is shaking – and may be about to erupt

More than 17,000 earthquakes have been recorded in the southwest of Iceland, in the Reykjanes Peninsula, during the past week. People living in the area have been advised to be extra careful due to dangers of landslides and ...

How 'green' are environmentally friendly fireworks?

Fireworks are used in celebrations around the world, including Independence Day in the U.S., the Lantern Festival in China and the Diwali Festival in India. However, the popular pyrotechnic displays emit large amounts of ...

Extreme melt on Antarctica's George VI ice shelf

Antarctica's northern George VI Ice Shelf experienced record melting during the 2019-2020 summer season compared to 31 previous summers of dramatically lower melt, a University of Colorado Boulder-led study found. The extreme ...

Coldest Northern Hemisphere temperature officially confirmed

Nearly 30 years after recording a temperature of minus 93.2 degrees Fahrenheit (minus 69.6 Celsius) in Greenland, the measurement has been verified by the World Meteorological Organization as the coldest recorded temperature ...

The dark dunes of Mars: Moreux crater

Known for its wide swathes of rippling, textured, gently sloping dunes, the Terra Sabaea region on Mars is home to many fascinating geological features—including the prominent Moreux crater, the star of a new image from ...

When bushfires create their own weather system

The recent bushfires in Australia have been terrifying. As we talk of firenadoes and megablazes, we're understanding just how dangerous and unpredictable fire behavior can be.

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