Of the many controversies surrounding the life and legacy of Christopher Columbus, who died on this day 510 years ago, one of the most intriguing but least discussed questions is his true country of origin. For reasons lost in time, Columbus has been identified with unquestioned consistency as an Italian of humble beginnings from the Republic of Genoa. Yet in over 536 existing pages of his letters and documents, not once does the famous explorer claim to have come from Genoa.
On 18th May plant lovers around the world take part in Fascination of Plants Day to raise awareness of the importance of plant science to our lives. Well, what is so fascinating about plants? We asked some of our authors and editors to share why they think plants are fascinating and why they are worth studying.
As the 2016 presidential election season begins (US politics, unlike nature, has seasons that are two years long), we will once again see Republican politicians ducking questions about the validity of evolution. Scott Walker did that recently in response to a London interviewer. During the previous campaign, Rick Perry answered the question by observing that there are “some gaps” in the theory of evolution and that creationism is taught in the Texas public schools (it isn’t, of course).
We are still in the longest war in our nation’s history. 2.7 million service members have served since 9/11 in the conflicts in Iraq and Afghanistan. Thousands have been killed, tens of thousands wounded, and approximately 20 to 30% have post-traumatic stress disorder and/or traumatic brain injury.
This month marks 266 years since the birth of one of the most celebrated names in medical discovery. Edward Jenner, credited with the discovery of the smallpox vaccination, was born on 17 May 1749 (6 May by the Julian calendar, still in use in England by a quirk of anti-papal authoritarianism until 1752) in the village of Berkeley in Gloucestershire, England.
It is now two years since the publication of DSM-5. As one might expect when a widely used manual is revised, some mental health clinicians were worried they would have to learn diagnosis from scratch.
Things move fast at the acute end of medicine – and nowhere is this more apparent than in the field of intensive and acute cardiovascular care. This important field has been somewhat neglected at the expense of super-subspecialisation in cardiology. But times are changing.
I used to climb trees when I was young (and I still, on occasion, do). As a boy in Iraq I had a favoured loquat tree, with branches that bore leathery, serrated leaves, shiny on the upper surface, and densely matted with fine hairs underneath. It seemed so big, though I now reflect it was probably rather small. I would haul myself up and over the lowest branch, making whatever use of the twists and folds of the trunk as provided purchase to my small feet.
There has been an ongoing battle to end homelessness in the United States, particularly among veterans. Over the past three decades, considerable research has been conducted to identify risk factors for veteran homelessness, and the Department of Veterans Affairs (VA) has funded much of that research. In 2009, the Department of Veterans Affairs (VA) announced its commitment to end veteran homelessness in five years. As we near the end of that five years, it’s important to reflect on what we have learned and what we now know about veteran homelessness.
Considerable evidence has linked an unhealthy diet to obesity, metabolic syndrome, diabetes and cancer. We now understand how chronic obesity ages us and then underlies the foundation of our death. Furthermore, obesity leads to body-wide chronic inflammation that predisposes us to depression and dementia. However, these are all the long-term consequences of our diet upon our body and brain.
A red open car blasts past you, exhaust and radio blaring, going at least 10 miles faster than the speed limit. Want to take a bet on the driver? Well, you won’t get odds. Everyone knows the answer. All that exhibitionism shouts out the commonplace, if not always welcome, features of young males. Just rampant testosterone, you might say. And that’s right. It is testosterone. The young man may be driving the car but testosterone is what’s driving him.
How sharp is your medical lexicon? Even experienced professionals may be stumped by these obscure terms! Definitions are drawn from the Dictionary of Nursing and the Oxford Concise Medical Dictionary on Oxford Reference.
Throughout history, nurses have been the unsung heroes of the medical profession. President Dwight D. Eisenhower, for instance, refused to proclaim a “Nurses’ Day” at the request of Dorothy Sutherland, an official with the US Department of Health, Education, and Welfare in 1953. More than two decades later, however, the International Council of Nurses (ICN), succeeded in establishing International Nurses Day on the anniversary of the birth of Florence Nightingale, a 19th century wartime nurse considered the founder of modern nursing.
On this day in 1863, General Thomas J. “Stonewall” Jackson, one of the wiliest military commanders this country ever produced, died eight days after being shot by his own men. He had lost a massive amount of blood before having his left arm amputated by Dr. Hunter Holmes McGuire, arguably the most celebrated Civil War surgeon of either side.
It is curious that, although the modern theory of evolution has its source in Charles Darwin’s great book On the Origin of Species (1859), the word evolution does not appear in the original text at all. In fact, Darwin seems deliberately to have avoided using the word evolution, preferring to refer to the process of biological change as ‘transmutation’. Some of the reasons for this, and for continuing confusion about the word evolution in the succeeding century and a half, can be unpacked from the word’s entry in the Oxford English Dictionary (OED).
Our actions, thoughts, perceptions, feelings, and memories are underpinned by electrical activity, which passes through networks of neurons in the brain. As a child grows and gains new skills their brain changes rapidly and brain networks are formed and strengthened with learning and experience.