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The following is an excerpt from National Geographic.
Antarctica's ice shelves are losing it.
Conventional wisdom holds that ice shelves—the seaward extension of glaciers on land—lose most of their mass by shedding icebergs. But new research finds that there's another weight-loss program at work—many of Antarctica's ice shelves are melting away from the bottom up.
Glacier experts have known for years that ice shelves melt at the boundary between the ice and the sea. But previous studies have only looked at individual glaciers and ice shelves in Greenland and Alaska, said Erin Pettit, a glacier expert at the University of Alaska in Fairbanks who was not involved in the new research.
A study published today in the journal Science has gone beyond those individual observations and found that about 55 percent of the mass lost from ice shelves in Antarctica is through melting at the ice-ocean boundary. (Learn more about The Big Thaw in National Geographic magazine.)
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El fenómeno trae el día más largo y la noche más corta para el 88% de los habitantes del Hemisferio Norte.
A storm will crawl through the northeastern part of the nation during the first weekend of summer with rounds of drenching showers and thunderstorms.
Thousands gathered around Stonehenge on Thursday morning to watch the rising sun in celebration of the start of summer.
Heavy rain is expected to continue to inundate much of India as thunderstorm activity makes a northwestward push towards the National Capital Region.
A number of potential threats can sour a trip to the beach without taking proper precautions.
Rounds of heavy showers and thunderstorms caused destructive flash flooding around Pittsburgh on Wednesday evening.
A long stretch of dry and unseasonably hot weather will take hold of the United Kingdom during the final week of June.
In May, the Food and Drug Administration (FDA) approved the first medicine that is designed to prevent migraines, which could end up having a largely positive impact on people are susceptible to these severe headaches.