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Giant Void Hidden Under Antarctica’s Ice Threatens Vast Glacier
The void is large enough to have once held 15 billion tons (13.6 billion metric tons) of ice, but much of that ice has melted during the past three years, according to NASA.
The cavity is colossal, about two-thirds the area of Manhattan and nearly 1,000 feet (300 meters) tall. It's growing at the bottom of Thwaites Glacier in West Antarctica, and it's rapidly enabling ice melt above it.
If the entire glacier melted, the resulting water could raise world ocean levels by more than 2 feet (65 centimeters), the researchers said. Moreover, the glacier acts as a backstop for neighboring glaciers, meaning that it slows the rate at which they lose ice. If those glaciers melted, too, sea levels could increase a whopping 8 feet (2.4 meters), the research team said.
source: https://www.livescience.com/64645-giant-void-in-antarctica.html
"The overwhelming evidence of the IPBES Global Assessment, from a wide range of different fields of knowledge, presents an ominous picture," said IPBES Chair, Sir Robert Watson. "The health of ecosystems on which we and all other species depend is deteriorating more rapidly than ever. We are eroding the very foundations of our economies, livelihoods, food security, health and quality of life worldwide."
The average abundance of native species in most major land-based habitats has fallen by at least 20%, mostly since 1900. More than 40% of amphibian species, almost 33% of reef-forming corals and more than a third of all marine mammals are threatened. The picture is less clear for insect species, but available evidence supports a tentative estimate of 10% being threatened. At least 680 vertebrate species had been driven to extinction since the 16th century and more than 9% of all domesticated breeds of mammals used for food and agriculture had become extinct by 2016, with at least 1,000 more breeds still threatened.
"Ecosystems, species, wild populations, local varieties and breeds of domesticated plants and animals are shrinking, deteriorating or vanishing. The essential, interconnected web of life on Earth is getting smaller and increasingly frayed," said Prof. Settele. "This loss is a direct result of human activity and constitutes a direct threat to human well-being in all regions of the world."
Compiled by 145 expert authors from 50 countries over the past three years, with inputs from another 310 contributing authors, the Report assesses changes over the past five decades, providing a comprehensive picture of the relationship between economic development pathways and their impacts on nature.
Presented with comment... except
except my heart goes to the guy in India --- since 1979 he has been working for the planet not himself .. kindred soul my trading success shall make the dreams of the good reality...
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enjoy - but also see it in your mind.
Please see the healing of the planet..
