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This Day in World History
While he cranked the handle on the device, inventor Thomas Edison watched the faces of the editors from the journal Scientific American. He was in the magazine’s offices to demonstrate one of his newest inventions. As he cranked, indentations made on a tinfoil cylinder sent signals to a diaphragm, and the editors heard the machine ask after their health.
This Day in World History
For five hours, the thirty-person surgical team worked in an operating room in Cape Town, South Africa. The head surgeon, Dr. Christiaan Barnard, was leading the team into uncharted territory, transplanting the heart of a young woman killed in a car accident into the chest of 55-year-old Louis Washkansky.
On World AIDS Day 2011, we speak with Dr Martin S. Hirsch, MD, FIDSA to find out the latest news on the global fight against AIDS. Dr. Hirsch is editor-in-chief of The Journal of Infectious Diseases, professor of medicine at Harvard Medical School, professor of infectious diseases and immunology at the Harvard School of Public Health, and a physician at Massachusetts General Hospital. -Nicola Burton, Blog Editor
By Eric Scerri
As far back as I can remember I have always liked sorting and classifying things. As a boy I was an avid stamp collector. I would sort my stamps into countries, particular sets, then arrange them in order of increasing monetary value shown on the face of the stamp. I would go to great lengths to select the best possible copy of any stamp that I had several versions of. It’s not altogether surprising that I have therefore ended up doing research and writing books on what is perhaps the finest example of a scientific system of classification – the periodic table of the elements.
By Halley S. Faust, MD, MPH, MA and Paul T. Menzel, PhD
The U.S. Preventive Services Task Force (USPSTF) recommends against prostate-specific antigen (PSA)-based screening for prostate cancer (a grade D recommendation).
By Jonathan Crowe
After the greyness of winter, the arrival of spring is heralded by a splash of colour as plants emerge from the soil, and trees seemingly erupt with leaves. Soon, much of the countryside has moved from being something of a grey, barren wasteland to a sea of verdant green. But why is it that so much vegetation is green? Why not a sea of red, or blue? To answer this question let me take you on a colourful journey from the sun to within the cells of plant leaves.
By Darrel Ince
I’m typing this blog entry on a desktop computer. It’s two years old, but I’m already looking at it and my laptop wondering how long they will be around in their current form. There are three fast-moving trends that may change computing over the next five years, affect the way that we use computers, and perhaps make desktop and laptop computers the computing equivalent of the now almost defunct record player.
By Jeff Lockwood
It’s hard to know what any organism experiences. For that matter, I’m not even sure that you feel pain—or at least that your internal, mental states are the same as mine. This is the “other minds” problem in philosophy. At least other people can tell us what they feel (even if we can’t be certain that their experience is the same as ours), but we can’t even ask insects.
This Day in World History
On the day it was published, Charles Darwin’s On the Origin of Species sold out—eager readers bought every single copy. This alone is not remarkable: the print run was a mere 1,250 copies. But in presenting to the world his theory of evolution by natural selection, Darwin’s tome made history.
Neutrinos: what are they and why does nature need them? In a recent lecture Professor Frank Close gave an overview of the discovery of neutrinos, discussing how we are becoming increasingly aware of their significance and speculating over ways in which we may utilise them.
By Lauren Pecorino
Cancer is managed throughout the world by teams of people, most notably those made up of doctors, nurses, hospice workers and scientists. But it took one powerful and astute businesswoman to use a successful marketing campaign to raise awareness of breast health around the world. In 1992, Evelyn Lauder, daughter-in-law of Estee Lauder, along with Alexandra Penny, former Editor of SELF magazine, created the pink ribbon as a symbol of breast health.
By Jeff Lockwood
If people have told you that daddy-longlegs are deadly, then those people are dead wrong. This tale is debunked on the website of the University of California Riverside, and I trust my colleagues at UCR. I know a several of the entomologists there, and they’re a really smart bunch of scientists (a claim that one might question, given that they chose to live in Riverside, but my concern is for their entomological acumen, not their geographic aesthetics). So, I’m going to use what they say about daddy-longlegs and if you end up dying from a bite, then it’s on them.
By Barbara Oakley
Pathological altruism is, in a great sense, the study of the onramps to the well-intentioned road to hell. That is, it is the study of truly well-meaning behavior that worsens instead of improves a situation, or creates more problems than it solves. Does the concept of pathological altruism then provide a license to steal—as long as it was done for a good cause? Not so fast.
Obsessive Compulsive Disorder (OCD) is an often misunderstood anxiety disorder. It’s treatment of choice, a form of Cognitive Behavioral Therapy known as Exposure and Response Prevention (ERP), is likewise difficult to grasp and properly use in therapy for both consumers and their therapists. This is in part because of the counter-intuitive nature of ERP, as well as the subtle twists and turns that OCD can take during the course of treatment.
By Danielle Venton
For millions of years, the stout, muscular Przewalski’s horse freely roamed the high grasslands of Central Asia. By the mid-1960s, these, the last of the wild horses, were virtually extinct: a result of hunting, habitat loss, and cross breeding with domestic horses.
By Laura Williams
Early in 2011 the National Institute for Health and Clinical Excellence (NICE) published guidance intended to improve treatment for alcohol dependence and harmful use in England, Wales and Northern Ireland. Yet under the coalition government, the stigmatisation of alcohol dependence has worsened and become increasingly explicit in England.