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Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
polar bear : a large creamy-white carnivorous bear (Ursus maritimus synonym Thalarctos maritimus) that inhabits arctic regions — Webster
Polar bear (Ursus maritimus) is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is a large bear, approximately the same size as the omnivorous Kodiak bear (Ursus arctos middendorffi). A boar (adult male) weighs around 350–700 kg (772–1,543 lb), while a sow (adult female) is about half that size. Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice and open water, and for hunting seals, which make up most of its diet. Although most polar bears are born on land, they spend most of their time on the sea ice. Their scientific name means “maritime bear” and derives from this fact. Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present. Because of their dependence on the sea ice, polar bears are classified as marine mammals — Wikipedia
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
- Leopards from Africa and Asia are genetically...on April 14, 2021 at 11:37 am
A small group of leopards migrated to Asia about half a million years ago following their evolution in Africa, a new study suggests.
- DNA of African and Asian leopards reveal big...on April 13, 2021 at 1:40 pm
Leopards are among the most widespread carnivores today, living in a wide range of habitats, from deserts to rainforests, and from the lowland plains to the mountainous highlands.
- What are the best ways to search for...on April 9, 2021 at 1:23 pm
The search for extraterrestrial intelligence (SETI) has long roots in human history. With the advent of modern technologies, scientists were finally able to start scanning the skies for any sign of life. When the search first started back in the 1960s, it focused almost exclusively on trying to detect radio signals. Over the decades, no irrefutable evidence of any artificial radio signals was ever found. Financial support started to drift away from the discipline, and where the money goes so […]
- Too many bears and penguins: Cartoons forget...on April 7, 2021 at 12:45 pm
Sara Moreno, Tatiana Pina and Martí Domínguez, researchers at the University of Valencia, have shown the over-representation of iconic animals of climate change, such as polar bears and penguins, in cartoons that address the climate emergency. In a scientific article, for which they have reviewed 1,022 of these illustrations, they conclude that, regardless of their geographical origin, cartoonists tend to avoid the use of native animals and show very little biodiversity in their drawings, […]
- How polar bears maintained highly specialized...on April 2, 2021 at 1:10 pm
Polar bears are often considered the poster-child species for climate change impacts. With global warming and sea-ice declines, it becomes harder for polar bears to hunt their preferred prey—seals. Increased global temperatures are having the greatest impact on Arctic and Antarctic environments, with arctic polar bears projected to decline by 30 percent by 2050.