Article by Matt Miller. Listen to the audio of a large iceberg in Antarctica scraping against the ocean floor or another iceberg and read the full article here.
Excerpt from the article:
“Last year, glaciologist Jason Amundson of the University of Alaska Southeast actually flew out to investigate one of the bigger ice quakes near Wright Glacier and Mount Ogden on the United States-Canada border.
“The glaciers in that area are pretty small,” Amundson said. “To produce an earthquake like that, that could be detected regionally, you would need to have a pretty big event.””
“New research by scientists at the University of Iceland’s Research Centre of the Westfjords and their colleagues has revealed that the trophic niche of the Atlantic cod in Icelandic coastal regions remained stable for centuries, but changed in the 19th century alongside intensified fishing. It is likely that this reflects changes to both the age and size of the cod stocks, but also changes to marine food webs as populations fall due to extensive fishing and food chains shorten. The research was reported in Scientific Reports, a respected journal from the publishers of Nature. According to the authors of the study, the results underline the importance of conserving different migratory cod in Icelandic coastal regions, for example to boost the population’s resilience to environmental changes.
The research team included Guðbjörg Ásta Ólafsdóttir, biologist and director of the UI Research Centre of the Westfjords, and Ragnar Edvardsson, archaeologist at the Research Centre, along with their colleagues in Canada and Norway.
Guðbjörg Ásta and Ragnar have worked together for many years on interdisciplinary research into fish bones, particularly cod, that they have excavated from ancient fishing stations in the Westfjords. The oldest bones are 1000 years old. “The main aim of the research is to understand how changes in fishing and the marine environment have affected fish populations over the centuries. Using a data series spanning several centuries, we can establish a kind of baseline and try to estimate how extensive human exploitation could have affected marine ecosystems,” explains Guðbjörg Ásta. “
“The Greenland ice sheet is on track to lose mass at about four times the fastest rate observed over the past 12,000 years. At its current trajectory, such melting would dump huge quantities of freshwater into the sea, raising global sea levels and disrupting ocean currents, scientists concluded in new research Wednesday.
The new findings, published in the journal Nature, warn that the only way to avoid a drastically accelerated meltdown of the massive ice sheet in coming decades is for the global community to curtail emissions of greenhouse gases in the near-term.
Greenland is already the largest contributor to sea level rise, though Antarctica has the potential to increase sea levels even more. As sea levels creep upward, coastal storms including hurricanes and nor’easters become more destructive. Recent trends in more frequent “sunny day flooding” at high tide in places such as Annapolis, Md.; Norfolk; Charleston, S.C.; and Miami is also linked to sea level rise.”
This was so incredibly beautiful, and it definitely brought tears to my eyes.
“The Ozernaya River winds serpentine-like through a remote corner of Kamchatka in Far East Russia. In one of the most intact eco-systems left in the Northern Pacific, rainbow trout eat mice for breakfast, and the salmon run in the hundred of thousands. This bounty attracts two kinds of people; those who want to protect, and those who want to exploit. Rampant salmon poaching is big business on Kamchatka, and once the salmon are gone, entire eco-systems collapse. “Fly Fishing in the Anthropocene” explores how fly fishing can help protect the wilderness, and celebrates the beauty and wonder of one of the most vibrant places on earth.”
” Ask medieval historian Michael McCormick what year was the worst to be alive, and he’s got an answer: “536.” Not 1349, when the Black Death wiped out half of Europe. Not 1918, when the flu killed 50 million to 100 million people, mostly young adults. But 536. In Europe, “It was the beginning of one of the worst periods to be alive, if not the worst year,” says McCormick, a historian and archaeologist who chairs the Harvard University Initiative for the Science of the Human Past.
A mysterious fog plunged Europe, the Middle East, and parts of Asia into darkness, day and night—for 18 months. “For the sun gave forth its light without brightness, like the moon, during the whole year,” wrote Byzantine historian Procopius. Temperatures in the summer of 536 fell 1.5°C to 2.5°C, initiating the coldest decade in the past 2300 years. Snow fell that summer in China; crops failed; people starved. The Irish chronicles record “a failure of bread from the years 536–539.” Then, in 541, bubonic plague struck the Roman port of Pelusium, in Egypt. What came to be called the Plague of Justinian spread rapidly, wiping out one-third to one-half of the population of the eastern Roman Empire and hastening its collapse, McCormick says. ”
” Embryonic learning—things birds pick up from their parents while still in the egg—may play a bigger role than imagined. ”
” Birds feeling the heat from warming weather may be able give their offspring an early weather advisory right through the eggshell—which could in turn help baby birds prepare for the forecast.
A new study shows that the songs zebra finches sing to their eggs late in development may give the young a head start in dealing with warm weather once they hatch.
Researchers have long known that birds like chickens or quails, which hatch fully capable of fending for themselves, can hear through their eggs—allowing them to imprint things like who their mother is. But or around 50 years, nobody believed anything happened inside the egg with birds that hatch dependent on their parents.
A new study published today in Science upends that wisdom, showing that certain zebra finch calls can change their young’s growth and behavior in adulthood.