Carl Zimmers

John Wiens, an evolutionary biologist at Stony Brook University in New York says, “There is a terrible urgency to saving threatened species and habitats.” He continues in saying “As far as I can see, there is little urgency for bringing back extinct ones. Why invest millions of dollars in bring a handful of species back from the dead, when there are millions still waiting to be discovered, described, and protected?” This is a problem for many scientists and Paul R. Ehrlich states in his article, The Case of De- Extinction:It is a Fascinating but Dumb Idea, says that “It is much more sensible to put all the limited resources for science and conservation into preventing extinctions, by tackling the causes of demise….” This is proving that de-extinction is a bad idea because of the facts that it is more important to put money and research into conservation efforts. By focusing on de-extinction. We are tearing away our focus on these efforts and putting it into something that may or may not work. Something never tested that could possibly hurt not help the environment. Paul R Ehrlich also states that “De-extinction seems far- fetched, financially problematic, and extremely unlikely to succeed.” With de- extinction hindering conservation efforts and being unlikely to succeed it is clear that we should not even attempt de-extinction. However hindering conservation efforts is only one way that de-extinction is a bad

back extinct animals is very controversial but we need to bring them back to restore ecosystems

In conclusion, we rely on fossils and other scientific findings to help us understand how dinosaurs lived so long ago. The Jurassic Period was one of the more fascinating periods to learn about and one of the more interesting things that I’ve

Everything in life happens for a reason, and this includes the extinction of species with and without human involvement. To reverse the process of de-extinction as some people put it “amounts to playing God” (96). Although the science behind bringing a species back is admittedly amazing, there are other ways the time and money could be spent. Spending money on animals that are on the brink of extinction, and developing techniques for successfully growing their population, are much more viable options. Frankly, de-extinction, although very remarkable, is not something that should be heavily pursued. Apart from observing a woolly mammoth lounge around behind a thick pane of glass, there is very little reason to use de-extinction to revive one. Our efforts should be turned to the millions of species that currently inhabit the earth, known and

In nature, there are cases where species go extinct due to humans or for uncontrollable reasons. Recent scientific development has allowed a new idea called de-extinction the act of cloning extinct species using DNA samples from the past and biotechnology. However, extinct species should not be brought back to existence as the idea of de-extinction diverts attention and funding from protecting many endangered species that can still thrive in their environment. Another issue that arises with de-extinction is that resurrected species could become pests in their new environment.

The first dinosaurs were small, meat-eating animals that first arose over 200 million years ago. From such small beginnings evolved thousands of different species, including the largest animals ever to walk on Earth. At the Smithsonian, some of the most important dinosaurs known to science stand in our exhibit halls, from the ferocious Allosarus to eighty-foot Diplodocus. Learn more about our famous dinosaurs

Chapter 2: In chapter two of The Sixth Extinction the book explains how extinction is one of the first scientific concepts that children learn in school. Also, it talks about how children in the modern times know more about extinction than scientists did hundreds of years ago. Scientists first theorized the concept of extinction in the late 18th century. In this chapter the book also talked about how a naturalist named Georges Cuvier studied the fossils of an extinct animal called the American Mastodon, or Mammut Americanum, and decided that this creature, like many others, must have all died in the past. In his lifetime, many of Cuvier’s ideas about extinction were harshly criticized, but now, hundreds of years later, Cuvier is praised for

that when the audience is watching this sequence of Carl and Ellie growing old together and going through the ups and downs of life, the audience is able to subconsciously deduce that the images that they watching are either Carl’s memories being played out in front of them or it is the sped up and compressed representation of Carl’s life in a few minutes. But either way, what is important, and was definitely planned by the filmmakers, is that at this point the audience knows that Carl Fredrickson has, just like how every living human being on earth, his very own unique history, backstory and experiences: traits and characteristics that determine every individual person. Therefore, allowing the audience from just the montage sequence alone,

Everyone knows about the dinosaurs and how they went extinct. This was one of the major events that took place in the Cretaceous Time Period. The Cretaceous Period was the longest and last of three time periods in the Mesozoic Era. This time period lasted from about 144 million years ago until about million years ago (about 79 million years), and over that 79 million years the earth changed dramatically.

Obermeyer, Ziad, et al. "Early Death After Discharge from Emergency Departments: Analysis of National US Insurance Claims Data." BMJ : British Medical Journal (Online), vol. 356, 2017. Research Library. Ziad Obermeyer conducted a study showing the number of deaths after being released from a hospital. Obermeyer's study was on Medicare patients from 2007-12. He conducted his research on healthy looking people living in the community. The ones he excluded from his experiment were patients that were having to stay in a nursing home and/or being given hospice care. Once they are released from a hospital generally healthy, some of them die seven days later, some sooner and some later. Obermeyer then studies their death certificates and determines

My favorite period was the combination of the Triassic, Jurassic and Cretaceous periods. These periods are referred to as the Mesozoic Era. I loved these eras in particular because these eras dealt with basically nothing but the dinosaurs. I have always been fascinated with dinosaurs, and the fact that such huge animals were just wiped off the face of the earth. After the 5th mass extinction, no dinosaurs survived. Dinosaurs were very unique creatures, and there has not been any like them since this time. There were many different types of dinosaurs such as: Theropod dinosaurs (T-rex), Sauropods (Apatosaurus), and thyreophorans. Its evident there was a diversity and variation. I learned that theropods were the only group of carnivorous dinosaurs.

Dinosaurs were huge animals that existed in the past (Triassic period). Species came in different sizes and forms. Some had huge bodies while other tiny bodies and shape. From historical evidence prevalent today, dinosaurs were found in all continents but differed in sizes and physical attributes. The landmass prevalent in different regions denoted the type of species that existed within its boundaries.

Jurassic is a period of time with Dinosaurs, rodents and birds. There were also island seas consisting of sharks, sea monsters and blood-red planktons. The existing plants in that period were cycads, ferns and conifers. The Mesozoic era was about 245 million years ago to 65 years ago, so it almost lasted about 180 years in total. The Mesozoic era is divided into three periods of Triassic, Jurassic and Cretaceous. Mesozoic era means middle animals and it is the era, which the word’s fauna has changed from what is in the Paleozoic era and the most famous organisms of this era are dinosaurs. In the Mesozoic era, the extinction of more than 90 percent of species in the earth was observed and the reason behind it was mostly volcanic eruptions and climate changes. On the other hand, this era had massive changes that represented ecological niches and rise to new creatures such as rodent-size mammals and first dinosaurs. In Triassic, which was the first period of Mesozoic, the mammals and first dinosaurs existed. Later than that, the second period was Jurassic, which giant shaped dinosaurs and other kinds of dinosaurs were developed. Besides that the first flowering plants and primitive birds, with long teeth appeared in that era as well.

These techniques led to the discovery of the boundary between the two eras. A single thin layer of clay found within predominantly limestone rocks established this. By comparing the marine life found in, above, and below the clay, the marine life, like the dinosaurs, had been terribly affected by the extinction event. The percentage of life in the upper layers was dramatically lower than that in the lower. This was far more compelling than what was suggested by dinosaur’s fossils.

Extinction is the end of an organism or group of taxa.  Extinctions occur when a species becomes unfit for survival in its natural habitat usually to be replaced by another, better-suited species. An organism becomes ill-suited for survival because its environment is changed or because its relationship to other organisms is altered as stated from Credo Reference. The moment of extinction is generally considered to be the death of the last individual of that particular species. Mass extinctions, however, are rare events that only happen every few million years. Only recently have these events been recorded and scientist have become alarmed at these recent extinctions. Most extinctions aren’t even documented and some predict that most of