Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. 100 Websites You Should Know and Use Entertainment Meet David Peterson, who developed Dothraki for Game of Thrones There are seven different words in Dothraki for striking another person with a sword. Among them: “hliziﬁkh,” a wild but powerful strike; “hrakkarikh,”a quick and accurate strike; and “gezrikh,” a fake-out or decoy strike. But you won’t find these words in George R. R. News Highlights:CRISPR-Edited Human Embryos Raise Ruckus Blurring an ethical line, scientists at Sun Yat-sen University in Guangzhou have used the CRISPR/Cas9 gene-editing system not on human adult cells or animal embryos, as has been done on many occasions, but on human embryos. To date, scientists have been reluctant to edit human germline cells for fear of passing the revisions—and unknown consequences of those revisions—down to future generations. The Chinese scientists, however, advanced where others had hesitated, having taken the precaution of working with human embryos that they had deemed nonviable. If the scientists expected to escape controversy, they were mistaken.
Learn Biology Online For Free with our Huge Collection of Open Courses If you’ve always been interested to learn more about nature and the diversity of life, you can now Learn Biology Online for Free! Free Biology courses are easy to find yet some of the ones you find may not be worth your time. We’ve put together a list of Biology courses from well-respected institutions such as John Hopkins, Yale, MIT, Stanford, and UCLA. Diversity "Diversity is not about how we differ. Diversity is about embracing one another's uniqueness." - Ola Joseph "United we stand, divided we fall." - Aesop (620 -560 B.C.)
Locke: Government Locke: Social Order John Locke's intellectual curiosity and social activism also led him to consider issues of general public concern in the lively political climate of seventeenth-century England. In a series of Letters on Toleration, he argued against the exercise of any governmental effort to promote or to restrict particular religious beliefs and practices. His epistemology is directly relevant to this issue: since we cannot know perfectly the truth about all differences of religious opinion, Locke held, there can be no justification for imposing our own beliefs on others. Thus, although he shared his generation's prejudice against "enthusiastic" expressions of religious fervor, Locke officially defended a broad toleration of divergent views. Locke's political philosophy found its greatest expression in the Two Treatises of Civil Government, published anonymously during the same year that the Essay appeared under his own name.
Neurons Busily Rewrite Their DNA NonstopTrending Scientists from Johns Hopkins have found that neurons are not risk-averse, if fact, they use minor "DNA surgeries" to toggle their activity levels 24/7. Since these activity levels are important in learning, memory, and brain disorders, the researchers believe their finding will shed light on several key questions. These are images of mouse neurons from the hippocampal region of the brain.
10 Best Tools for Teachers and Students to Use in 2014 All teachers have a goal to establish clear, friendly, but authoritative communication with students and their parents. Parent meetings are not the most relaxed environment for the teachers to share their expectations and plans, which is why many educators have started using online tools to make this process easier. As a teacher, I have been using many web-based tools to bring some fun into the classes and make the communication with my students and their parents more effective. I’ve chosen some of the most useful tools to present in this list, which will hopefully be implemented in the teaching techniques of an increased number of educators during the upcoming year. 1.