Author: Oasis
An insemination procedure uses a thin, flexible tube (catheter) to put sperm into the woman’s reproductive tract. For some couples with infertility problems, insemination can improve the chances of pregnancy.
While there are numerous prehistoric sites in Europe and Asia that contain tools and other human-made artefacts, skeletal remains of ancient humans are scarce. Researchers of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, have therefore looked into new ways to get hold of ancient human DNA. From sediment samples collected at seven archaeological sites, the researchers “fished out” tiny DNA fragments that had once belonged to a variety of mammals, including our extinct human relatives. They retrieved DNA from Neandertals in cave sediments of four archaeological sites, also in layers where no hominin skeletal remains have been discovered. In addition, they found Denisovan DNA in sediments from Denisova Cave in Russia. These new developments now enable researchers to uncover the genetic affiliations of the former inhabitants of many archaeological sites which do not yield human remains.
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Although the blueprint for the modern automobile was perfected in Germany and France in the late 1800s, Americans dominated the industry in the first half of the twentieth century. Henry Ford innovated mass-production techniques that became standard, with Ford, General Motors and Chrysler emerging as the “Big Three” auto companies by the 1920s. Manufacturers funneled their resources to the military during World War II, and afterward automobile production in Europe and Japan soared to meet demand. Once vital to the expansion of American urban centers, the industry had become a shared global enterprise with the rise of Japan as the leading automaker by 1980.
This detailed, carefully-researched guide takes you through everything you need to care for your baby, according to science.
There are countless products out there aimed at new parents, designed to make your transition into parenthood as smooth as possible. However, the quantity of merchandise out there can make it hard to know what’s necessary and what’s a waste of money. Read on to to become an expert at choosing baby products.
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