2 stories from 2 sources
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A curated list of other prominent stories from this day.
Summary
An unusual LIGO gravitational wave event is being interpreted as a possible signature of primordial black holes. If that link holds, primordial black holes could account for some or all of dark matter.
Why it matters
Confirming primordial black holes would turn dark matter from an inferred substance into an observable gravitational population with measurable properties.
Summary
Two early heat waves erased the Alps’ winter snow cover about a month ahead of schedule. With the protective snow gone, large areas of bare glacier ice are now exposed and melting rapidly.
Why it matters
Earlier snow loss converts glaciers from seasonal buffers into accelerants of water and hazard volatility across Europe.
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