Category: Biology & Life Sciences, Text
About Us Read more Founded in 1915, the Cornell Lab is a nonprofit organization supported by 45,000 friends and members . Our vibrant community includes 200,000 citizen-science participants from all walks of life and 5 million bird enthusiasts of all ages who connect with us online at All About Birds. As a proud unit of Cornell University we have ten faculty on staff and access to world-class resources. As a nonprofit environmental organization, however, we depend on members, donors, research, and our other programs for 99 percent of our operating budget. Your support will result in direct impacts and improvements for conservation science. We invite you to join us as a member of the Lab .
Welcome to the Digital Library for Earth System Education A free service Thank you for your interest in DLESE. This overview is intended to provide you with very general information about DLESE and the library's organization. As always, we welcome your comments and suggestions. Please direct them to email@example.com . Browse the Library resources and collections What is DLESE? DLESE is the Digital Library for Earth System Education, a free resource that supports teaching and learning about the Earth system. DLESE's development was funded by the National Science Foundation and continues to be built by a distributed community of educators, students, and scientists to support Earth system education at all levels.
Rachel Louise Carson, noted biologist and environmentalist who fascinated readers with three books on the wonders of the sea and awakened the American public to the dangers of pesticide misuse with a highly controversial bestseller, was born on May 27, 1907, in Springdale, Pennsylvania. She was interested in writing at an early age and submitted a number of juvenile stories, poems, and essays to leading youth magazines. Rachel Carson's first book, Under the Sea Wind , attracted little notice on its appearance in 1941. However, her second book on the sea, The Sea Around Us (1951), remained on the best-seller lists for eighty-six weeks, was eventually translated into thirty languages, and received many awards.
Introduction DrMetcalf provides online access to information on cicadas , leafhoppers , planthoppers , spittlebugs , and treehoppers , including a searchable bibliographic database for retrieving literature on these groups, which together comprise the group Auchenorrhyncha . The database includes nearly 12,000 early publications (1741-1955). Few electronic databases cover the early literature for any insect group. Because the focal groups are common and widespread, users may find the database helpful for retrieving many older works on insects in general. DrMetcalf also includes an overview of the group Auchenorrhyncha and each of its major subgroups.
Linus Pauling and the Race for DNA: A Documentary History is comprised of three large sub-sections, each of which tells the story of the discovery of the double helix in a different way. Navigation between sub-sections may be achieved either through use of the links provided on the site homepage or through use of the links located in the header of each page within the site. Narrative - The first section - a thirty-four "chapter" Narrative - recounts the saga of the discovery from the largely unknown viewpoint of the major "loser" in the race: the phenomenal American chemist Linus Pauling (1901-1994). There are three components to each page of the Narrative.
The three sections of It's in the Blood! A Documentary History of Linus Pauling, Hemoglobin and Sickle Cell Anemia work together to provide an unusually rich source of information on Pauling's work in blood biochemistry and molecular disease. Navigate between the sections by using either the links on the site's home page or the links at the top of any page within the site. Narrative - The first section tells the story of Linus Pauling's research into the nature of human blood.
History of Medicine In 1816, an Englishwoman still in her teens, Mary Shelley, conceived the story of a scientist obsessed with creating life. Shelley's scientist, Victor Frankenstein, succeeds. But while Frankenstein's creature can think and feel, he is monstrous to the eye. Spurned by all, including Victor Frankenstein himself, the embittered creature turns into a savage killer. In 1818, Shelley's story was published as Frankenstein; or, The Modern Prometheus . This story — both in the original novel and shaped into new forms, such as plays, films, and comics — has captivated people ever since, exposing hidden, sometimes barely conscious fears of science and technology.
History of Medicine Instruction in Surgery. Five physicians and their colleagues in the surgical amphitheatre of the Massachusetts General Hospital watch as the anesthetist administers ether to a patient who is about to have surgery. This illustration appeared in an 1889 issue of Harper's Weekly . The National Library of Medicine was originally established 150 years ago, in 1836, as the Library of the Army Surgeon General's Office. Perhaps the key event in the library's history occurred in 1865, when Dr. John Shaw Billings became director. For the next 30 years he worked tirelessly to expand the library's holdings and open it as a source of biomedical information for all physicians.
History of Medicine Introduction This Guide to Collections relating to the History of Artificial Organs is a review of materials located in known repositories as well as private and corporate holdings worldwide. This guide is an introduction, not an inventory, to the papers, records, films, tapes, interviews and artifacts relevant to the history of artificial organ developments. Purpose of the Guide This Guide is intended to serve many purposes. It marks an essential first step towards preserving the documentary history of artificial organ developments in the United States and abroad. It is intended to bring attention to the need to preserve recent medical science history before documents and devices are lost.
History of Medicine Introduction The horse has been one of the most important animals throughout human history, and healing horses has had an important place in veterinary and medical literature. Theories about equine physiology and health often mirrored theories about humans, and the literature of both was inherently linked. Bloodletting, astrology, and ancient texts were used by both physicians and veterinarians to heal their patients, and many discoveries, including the circulation of the blood, developed in tandem. The Hippiatrica: Ancient Texts Medieval and Renaissance veterinary medicine looked to ancient veterinary texts for its inspiration, just as physicians for human healing did.
History of Medicine Home > From 'Monsters' to Modern Medical Miracles Home > Embryology and Classification of Conjoined Twins Embryology of Conjoined Twins Identical twins develop when a single fertilized egg, also known as a monozygote, splits during the first two weeks of conception. Conjoined twins form when this split occurs after the first two weeks of conception. The monozygote does not fully separate and eventually develops into a conjoined fetus that shares one placenta, one amniotic sac, and one chorionic sac. Because the twins develop from a single egg, they will also be the same sex. The extent of separation and the stage at which it occurs determine the type of conjoined twin, i.e., where and how the twins will be joined.
History of Medicine Rewriting the Book of Nature Charles Darwin and Evolutionary Theory Charles Darwin’s vision—“from so simple a beginning, endless forms most beautiful and most wonderful have been, and are being evolved”—now forms the foundation of the biological sciences. Radical in sweep, Darwin’s idea of naturally innovating and endlessly changing webs of life undercut all previous sciences. Darwin was instantly seen as a potent sign of a new science, a new way of conceiving the world. His theory was an immediate threat not just to those who were wedded to an older conception, but to all who relied on a given and settled order for meaning and for power.
Overview While theoretical biology is often understood to be primarily mathematical in nature, biology is an inherently historical science with a long tradition of conceptual theorizing, from Charles Darwin to the architects of the Modern Synthesis, and continuing through to today. Biological disciplines ranging from evolutionary biology to ecology, from cell to developmental biology, and from morphology to paleobiology are characterized by a lively interplay among empirical data, mathematical treatments, and conceptual discussions. Like theoretical biology, philosophy of biology is characterized by its attention to conceptual issues.
Garden and Forest is the first project of the Preservation Digital Reformatting Program in the Library of Congress's Preservation Reformatting Division. It is the first Library of Congress digitizing project to employ Making of America models. Making of America Making of America (MOA) is a digital library comprising reproductions of primary source materials in American social history published in the late-nineteenth century. The original collaborative effort between the University of Michigan and Cornell University to create MOA was funded by the Andrew W. Mellon Foundation.
The Great Lakes and their connecting channels from the largest aggregation of freshwater on the planet (excluding the polar ice caps). The watershed includes parts or all of eight U.S. states and the Canadian province of Ontario. The Lakes are the dominant and defining geological characteristic of the upper Midwest, affecting the social, economic, recreational and ecological life of the region. Bordering as it does on four of the five Great Lakes, the State of Michigan and its universities understand the importance of the Lakes for the future vitality of our state. Accordingly the University of Michigan has pursued an active research program in this area, and seeks to share some of its findings through this site.
Dental Cosmos, a Monthly Record of Dental Science was the first enduring national journal for the American dental profession, and one of the most significant in the early history of American dentistry. The foundation of dental practice was documented and debated in its pages from 1859 through 1936, when it merged with the Journal of the American Dental Association , serving as a cornerstone for JADA and the model of what a successful dental journal could be. Many of these original source articles are still cited and considered classics in the field. The conversion of Dental Cosmos (1859 to 1936) from print to electronic was made possible through the generous support of the Colgate-Palmolive Company. Last update December 4, 2006.
Blog September 9, 2009 About CHODARR What is CHODARR? CHODARR stands for Community Health Online Digital Archive and Research Resource which is a publicly accessible virtual library of community-based and government publications. It is a permanent, catalogued and full-text online archive of grey literature and research materials related to health and social welfare policy. The CHODARR archive includes documents that are not normally published by commercial publishers.