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Supervolcanic ash can turn to lava miles from eruption
Viscous heating can reheat volcanic ash enough to convert it to lava.
August 27, 2013
Big horns aren’t always best
It takes more than big horns to be the fittest sheep in the herd.
August 27, 2013
Milky Way in moonless sky
Serene shot of the Milky Way in the moonless sky from Itatiaia National Park in Brazil thanks to EarthSky Facebook friend Pedro Canovas Perez.
August 27, 2013
Authenticating the world’s most expensive coffee
Coffee cherries eaten by palm civets create the world's most expensive coffee. But blatant forgeries use beans that have never seen a civet's insides.
August 26, 2013
Changes in river chemistry affect water supplies
In the first survey of its kind, researchers looked at long-term records of alkalinity trends in 97 streams and rivers from Florida to New Hampshire.
August 26, 2013
Penn study finds earlier peak for Spain’s glaciers
The finding sheds new light on how regional climate has varied over time, providing information that could lead to more-accurate global climate models.
August 26, 2013
Lowest temperature for life discovered
Scientists have pinpointed the lowest temperature at which simple life can live and grow.
August 26, 2013
Bat-killing fungus continues to spread west through the US
Wildlife officials have detected the fungus that causes white-nose syndrome in bats from Arkansas. The fungus could reach the Rocky Mountains as early as 2015.
August 26, 2013
Lunar fogbow over Finland
This luminous fogbow was captured this weekend by EarthSky Facebook friend Thomas Kast.
August 26, 2013
Monarch butterfly habitat in Mexican forests at 20-year low
Climate change and illegal logging in Mexican forests, where the monarchs spend the winter, may be contributing the decline of monarch butterflies.
August 25, 2013
