Article #18 Is it Ironman? Desantis recently published a study on the changes to polar bears diets amid global warming. Understanding how climate is different from weather is key to understanding the evidence that tells us climate change is happening. Chris Servheen, a bear biologist and Adjunct Associate Research Professor at the University of Montana, said sightings of this hybrid bear species have been very rare in the past. The "Pizzly" bear first spotted in 2006 in the Canadian Arctic has the "white fur of a polar bear but the long claws, humped back, shallow face and brown patches of a grizzly," according . Scientists say that climate change is driving the hybridization. These hybrids, sometimes called pizzly bears or grolar bears, have been spotted in the wild as far. Their findings show that the two bears split into distinct species around 1.5 million years ago, with the . Even modern humans are the product of genetic exchange with Neanderthals some 60,000 years ago. 0000044163 00000 n So-called "pizzly" bears were first spotted in the wild in 2006. Article #41 Natural Selection Explained. For polar bears, the sea ice is a crucial platform for life. But some scientists say the two bear species are breeding more often because climate change is causing them to cross paths. This perhaps marks an evolutionary 180 from when polar bears and grizzlies diverged from a common ancestor hundreds of thousands of years ago, Vital Ground reported. They will also read about how the immune system aids the laser tattoo removal procedure to help get rid of tattoo ink. Remote Sensing. A pizzly was first spotted when a researcher noticed a bear with the white fur of a polar bear, but the long claws, hump, shallow face and patchy brown fur of a grizzly. Whats more astonishing is that scientists dont really know if this is a good thing. Students will learn about morbid obesity and the two main types of bariatric procedures (restrictive methods and malabsorptive methods) that are used to treat this condition. Kade was a fit 31-year-old when he died from a heart attack, 'Please confirm what Muslim refers to': Why Ali's birthday payment for his nephew was flagged by his bank, Protests break out in Iran as more schoolgirls hospitalised after suspected poisoning, Anna called police to report an assault, but it backfired and she lost her home, Sherpa are world famous for their work, which is synonymous with their name. Students can type in their answers directly in the Google Slides. The focus will be on the technologies that are used to constantly supply the crew with oxygen and that help get rid of liquid and solid waste in a microgravity environment. Article #10 Facebook Blues: Is Facebook Making You Unhappy? Students will learn about Henrietta Lacks and how cancer cells from her body, called HeLa cells, have been dividing for over six decades to produce immortal cell lines that have been used in medical and commercial research all over the world. correct answer and is guessing based on words that are used in the text. Article #11 The Making of Human Hermaphrodites. www.eenews.net, 202-628-6500. Article highlights include: Fleming's early achievements as a child; his aspirations to become a surgeon; his attainment of a medical degree; his shift in focus to studying bacteria instead of medicine; his time spent in battlefield hospitals in World War I where he promoted a better way to treat deep wounds since the method currently used was killing many of the soldiers; his discovery of lysozymes in bodily secretions which could kill bacteria and his accidental discovery of penicillin due to the contamination of bacterial samples by mold. Polar bears are often considered the poster-child species for climate change impacts. Discover world-changing science. Article highlights include: details of his difficulties with authority and school while growing up; his amazingly productive 1905 year when he came up with and published four groundbreaking ideas (including e=mc2 and the special theory of relativity); an application of the theory of relativity; an explanation of the significance of e=mc2, his abandonment of Germany during the rise of Adolf Hitler's Third Reich, his emigration to America, his contribution to the Manhattan Project's development of nuclear weapons and his great regret for contributing to the nuclear bombings of Hiroshima and Nagasaki. A great class discussion can ensue from this. They usually wait on Baffin Island until the ice forms again so they can leave. Climate change is known for swelling the oceans and fueling extreme weather, but it may be also causing the curious emergence of a new type of bear in the Arctic. 5 min read A hybrid polar-grizzly bear, known as a 'grolar' or 'pizzly' bear (Getty) Back in 2006, a strange polar bear was seen in the Northwest Territories of. This is how we got here and what needs to change, Inside the family succession drama threatening to change the K-pop industry forever. Laidre says that is because the ice is retreating earlier and there has been more open water in recent summers. The pizzly bear is the result of polar. Students will learn about the challenges of designing food for astronauts, the requirements that space food must meet (like taking up very little space and having a long shelf-life at room temperatures), the different categories of space foods, how different equipment must be made for eating a meal in microgravity environments, and why food in space doesn't taste as good as it would on Earth. "The result is you have polar bears spending more time on land and grizzly bears spending more time where polar bears might be, and so the result is that we're seeing these occasional hybrids between two species.". The event horizon and singularity is also explained as well as the classification of three types of black holes. The first one of its kind was spotted in 2006 and at the time it was considered to be a rare occurrence. Climate change fills polar bears with toxins The melting ice around Greenland has changed the polar bear's diet. The carnivore tooth expert co-authored a study in how the diet of polar bears differed in a warming world. (Thanks Lisa A. It is competitions like these that contribute to the common perception that mixing animal species leads to maladapted animals, according to Michael Arnold, a professor of genetics at the University of Georgia. Then finally, the team used mathematical models to forecast future reproductive success. Article #25 The Science and Evolution of Human Skin Color. Image of the Day Snow and Ice 0000000016 00000 n A threat to genetic diversity? Students will learn about the L. paradoxum parasite that infects snails. Even if greenhouse gases were curbed immediately, sea ice would likely continue to decline for several decades because large-scale changes take a long time to propagate through Earths climate system. In the meantime, Laidre hopes this studys information will be used to further understand the impacts of sea ice loss on the species. A Trending Reel Challenge That Can Win Us a Brand-New Swift? The graph below shows the onshore arrival and departure of polar bears on Baffin Island relative to dates of sea ice advance and retreat. The safety of tattoo inks is also discussed along with how they can be affected by MRIs. Hunter Didji Ishalook originally thought hed shot a small polar bear but he said it was a half-breed a position backed by several bear experts. Pizzlies, at the end are a result of a massive climatic instability and this surely isnt the acceptable way to go ahead. So-called pizzly bears were first spotted in the wild in 2006. To meet such energy demands, a female bear on the spring sea ice should eat. We are losing biodiversity not due to genetic exchange, but because we are eating up the landscape, said Arnold. This is a great extension activity for classes studying the digestive system or nutrition. Thanks for reading Scientific American. (Thanks D'Niessa S.). As well they will learn about the effects of high altitude training on red blood cell production (which is a legal method of increasing red blood cell count) and about the World Anti-Drug Doping Agency's use of athlete biological passports to detect cheating. Grizzly bears and polar bears only diverged 500,000 to 600,000 years ago, so the two species can mate and produce viable offspring. Water 2023 NYP Holdings, Inc. All Rights Reserved, With climate change pushing polar bears toward the brink, My low confidence in medias climate change propagandists, World Bank elites put climate policy over developing nations prosperity and security, Higher energy bills coming, thanks to Gov. They will learn about the difficulties people with CIPA face because they cannot feel pain, the different types of nociceptors (pain neurons) that exist in humans, how mutations in a gene destroys nociceptors in people with CIPA, the concerns parents need to have if their child has CIPA and how CIPA is genetically inherited. Mr Servheen is among a group of scientists who believe climate change is causing the polar and grizzly bears to come into contact more often. The scale has been provided for students to diagnose their own Facebook dependency. Students will read about how mitochondrial DNA has helped geneticists discover Mitochondrial Eve, about the research behind her discovery and about the implications of this research on the evolutionary origins of humans. The researchers found larger litter sizes when the mothers were in a good body condition and when spring breakup occurred later in the year, meaning bears had more time on the sea ice in spring to find food. The long-term trend for Arctic sea ice extent has been definitively downward. Hybrids are not classified as their own species, so there are no regulations to protect themthey cant be placed on the U.S. governments endangered species list. Polar bears, on the verge of extinction due to climate change, are frequently moving inland in search of food and mating with grizzly bears to create a hybrid animal that is more resilient to the warming world. Polar bears survive on seals found in sea . This material may not be published, broadcast, rewritten, or redistributed. We Say, Yes! Reprinted from Climatewire with permission from Environment & Energy Publishing, LLC. We should do what we can to be good stewards.. We dont know yet, but perhaps the intermediate skull of the pizzly could confer a biomechanical advantage.. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). While polar bears have longer skulls in order to grab seals out of the water, their molars are smaller than is typical for their body size because all they eat is blubber all day. b!YrJ;4%&h3x.>Q* o8a$1>;GyDD"R# zNRqAb1*4$$'gr`&FB`N;(0wk-0_"&1NHS]t-MM b%IHkgm_=d:PF>~2H9hf}f`g pUUnlA8Yoe+?gDipy%]lN9wjMa-v+: sQ: August 5, 2021. Heat With sea ice thinning, the endangered, starving polar bears are being driven . As this happens, it makes way for grizzly bear territory to expand further north which increases the interaction between the two species, with possible mating opportunities. The hybrids retain features from both the species -- pizzlys are short-furred bears that are more capable of dealing with warmer temperatures compared to a grizzly. A new study, published in the Proceedings of the National Academy of Sciences found that climate change's effect on the bear species' habitats has also affected the animals' mating behaviors.. 0000018224 00000 n 0000002964 00000 n Copying for more than one teacher, classroom, department, school, or school district is prohibited. 0000009711 00000 n The original version of the story misstated the name of the Montana basin. Desantis recently published a study on the changes to polar bears' diets amid global warming. This question can be a good springboard for further exploration of how scientists study and report evidence of climate change. Grizzly bears found in Alaska and Canada appear to be moving north as their environment warms, bringing them into contact with polar bears located on the coastline. There, they hooked up with grizzlies migrating north from Alaska. On average, the bears are spending 30 more days on land now than they did in the 1990s. Hybridization can increase genetic diversity in some cases, said Tallmon. . 0000018199 00000 n 2023 Scientific American, a Division of Springer Nature America, Inc. This can affect their overall health and reproductive success.. A recent study published in the Proceedings of the National Academy of Sciences found that climate change affects the bear species' habitats and mating behaviors. The first one of its kind was spotted in 2006 and at the time it was considered to be . If the sea ice disappears, some may be successful but a lot wont be successful. The issue is how fast we are driving species to extinction, said Pimm. Australia's oldest running coal-fired power station is about to close. Students will learn about lobotomies, why they were used, how they were performed, the people who helped develop the procedure (Antnio Egas Moniz, and Walter Freeman), the effect lobotomies had on patients and why the technique is no longer widely used to treat mental illnesses. Article highlights include: his numerous failed attempts at studies and his father's disappointment in him; his eventual success at studies into the natural world; his voyage on the HMS Beagle; his return to England to scientific acclaim and respect; ideas that influenced his development of his theory of evolution by natural section (Lyell, Malthus etc.) Students will learn about alloys, how they are made, how steel and stainless steel are made and about Nitinol, the amazing superelastic alloy that makes up Ironman's suit. 0000025750 00000 n A new study shows that polar bears are spending less time on sea ice, leading them to fast longer, become thinner and have fewer cubs. HT0}D BZ[EmUbXk;M)o\ We are looking at an evolutionary change in the long term where overlaps are increasing and polar bears dont have a lot of options. They will learn about what characterizes each stage and the major hormones involved in each stage. As this happens, it makes way for grizzly bear territory to expand further north which increases the interaction between the two species, with possible mating opportunities. 0000008902 00000 n With a dingy white coat and scattered . A fluffy reminder of how climate change is transforming our planet at an alarming rate. Results showed the bears body condition was linked with sea ice availability in the current and previous year. Students will learn about human hermaphrodites, the etymology of the word hermaphrodite, the two major causes of human hermaphrodism (46XX/46XY chimeras, the SRY gene) and other organisms that are hermaphroditic. Image of the Day Please look at the time stamp on the story to see when it was last updated. They will learn about the conditions under which fossil fuels are created and what turns some organic remains into oil and natural gas, while other remains form coal. Beyond speculation, two real cases of pizzly bear offspring in the wild (as confirmed by genetic testing) is discussed along with the possibility of other Arctic hybrids. 0000003497 00000 n Students will learn about the limits of cell division and how cancer cells circumvent these limits. Paleontologist Larisa DeSantis told DailyMail.com: "This new type of bear is more resilient to climate change and better suited for warmer temperatures." Please click on the preview and zoom in to read an excerpt of the first page of the article to see if the content and reading level is appropriate for your students. They will examine the difference between totipotent, pluripotent and multipotent stem cells. Article highlights include: Linnaeus' early and intense passion for plants; his failure to do well in school; how he became a lecturer of botany at a university at the tender age of 23; his intrepid expeditions to find new species of plants and animals; his desire to change the way species were named and his development of binomial nomenclature and his own system of classification; his great popularity as a teacher of botany; his devoted students who he sent off to remote areas of the world to collect new plant and animal specimens (7 of whom died during the task) and his controversial grouping of humans with primates. Students will learn the differences between REM and nonREM sleep, how much sleep is needed for individuals, why sleep is important, what happens when someone experiences sleep deprivation and insomnia and how other mammals exhibit different sleep patterns and habits when compared to us. Sea and Lake Ice, Image of the Day Grizzly bears, known for the distinctive hump on their shoulders, are normally solitary animals but come together to feed or to mate. Animals have been interbreeding for millennia. Artificial selection is also discussed in contrast to natural selection. 0000057313 00000 n The Arctic sea ice cap is a large area of frozen seawater floating on top of the Arctic Ocean and its surrounding seas and straits. The students were asking many questions after reading. Students will also learn about how habit retraining can help overcome the negative behaviors that seem to stem from the lack of self-control. Pizzly bears, sometimes called grolar bears, are a bear hybrid that could become more common in the Arctic as a result of the climate crisis.