These are organized by a classification scheme developed exclusively for Cosma. More…
polar : (a) of or relating to a geographic pole or the region around it (b) coming from or having the characteristics of such a region — Webster
Polar regions of Earth also known as Earth’s frigid zones, are the regions of Earth surrounding its geographical poles (the North and South Poles). These regions are dominated by Earth’s polar ice caps, the northern resting on the Arctic Ocean and the southern on the continent of Antarctica. — Wikipedia
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- Republican and Democratic voters agree on one...on February 26, 2021 at 7:29 pm
Both Democrats and Republicans overwhelmingly favor politicians who support generous COVID-19 relief spending, yet remain deeply polarized over the legitimacy of the 2020 presidential election results and former President Donald Trump's second impeachment. Meanwhile, political experts find that the former president's actions and those taken by congressional supporters in the aftermath of the election represent serious departures from American democratic norms.
- Combating ecosystem collapse from the tropics to...on February 26, 2021 at 12:50 pm
Eminent scientists warn that key ecosystems around Australia and Antarctica are collapsing, and propose a three-step framework to combat irreversible global damage.
- Can polar bears and narwhals cling on as the ice...on February 24, 2021 at 4:09 pm
As part of the Journal of Experimental Biology's Special Issue dedicated to climate change, Anthony Pagano (San Diego Zoo Global, USA) and Terrie Williams (University of California, Santa Cruz, USA), discuss the impact of environmental change on two iconic polar species; the polar bear and narwhal. Their review article is published in Journal of Experimental Biology.
- NASA mission seeks to understand bright...on February 24, 2021 at 12:56 pm
Since the late 1800s, observers have searched the polar skies for elusive, high-flying clouds that shine in the darkness. These polar mesospheric clouds, or PMCs, are wispy swarms of ice crystals that form in the late spring and summer over the North and South Poles. Observers spot them best in the twilight hours, when the Sun illuminates them from beyond the horizon against a dark sky. More than just a pretty sight, they also hold clues to what's going on in Earth's atmosphere.
- Getz glaciers on the runon February 23, 2021 at 6:16 pm
Using a 25-year record of satellite observations over the Getz region in West Antarctica, scientists have discovered that the pace at which glaciers flow towards the ocean is accelerating. This new research, which includes data from the Copernicus Sentinel-1 mission and ESA's CryoSat mission, will help determine if these glaciers could collapse in the next few decades and how this would affect future global sea-level rise.