We've found a bunch of dwarf galaxies we thought didn't exist
27 November 2017
The missing dwarf galaxies around the Milky Way have been found. Their existence means dark matter could be made of particles that are warmer than we expected
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Premium
Good news: one form of air pollution may be falling in Europe
27 November 2017
Levels of nitrogen dioxide in European city air rose throughout the 2000s but seem to have reached a peak in 2010 – suggesting Europe might get cleaner air sooner than expected
Lightning leaves clouds of radiation and antimatter in its wake
22 November 2017
A lightning storm can trigger an atmospheric nuclear reaction that leads to the production of antimatter and radiation, which may pose health risks
