Alpinism added to UNESCO heritage list
Alpinism, named for the range where it took root, won UNESCO recognition as a celebrated pursuit with an "intangible" cultural heritage worthy of protecting.
Polar Regions
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U.N.: Oceans and frozen regions changing
Coastal flooding with huge ice and snow losses are getting more extreme as oceans warm and acidify while frozen parts of the planet melt faster, IPCC said.
Scientists point to gaps in climate ambition
A day before the U.N. Climate Action Summit, climate science groups said nations must reduce "glaring and growing gaps" between intention and action.
In Trump era, Arctic Council steers clear of addressing the climate crisis
Scientists say the Arctic region is warming about twice as fast as the rest of the planet, but the Trump administration blocked a council statement from referring to that threat.
International array captures the unseeable with a 'virtual telescope'
The Event Horizon Telescope pulled off one of astrophysicists' longtime dreams by documenting a supermassive black hole.
Scientists find Earth's ozone hole is on the mend due to treaty efforts
A new scientific assessment shows damage to the ozone layer from aerosol sprays and coolants started recovering.
Nations agree to fishing ban allowing Arctic marine protections
Concerns about climate change's rapid rate of advance in the far north drove three years of talks on commercial fishing.
International hunt detects ghostly neutrino from a galaxy far away
An international observatory traced a high-energy cosmic neutrino back to its origin about 4 billion light years away.
Polar research looks at climate unknowns in southernmost ocean
One of the themes of a polar conference focuses on the need for more scientific research into the Southern Ocean.