One Hundred Years of the Flu

100 years ago one of the deadliest natural disasters hit humanity, killing approximately 4 percent of the earth's population. Even people in remote Pacific Islands and the Arctic met their demise due to this virus. This shocking number of deaths was caused by the flu, although these days most healthy people take the flu lightly.

That particular strain, the H1N1 influenza virus, commonly known as the Spanish Flu, claimed many young as well as many previously healthy adults. Additionally, since it arrived on the heels of the Great War, many people were malnourished, living in overcrowded medical camps with little access to good hygiene.

Royalty Free and Rights Managed Stock Images of the Flu

Government censorship may have played a role in the pandemic. To appear strong, many governments didn't reveal how devastating the flu was, giving no warning to the public to protect themselves. In Spain this information was not censored, giving the world the false impression that the Spanish were harder hit than the rest of the world. Thus the common moniker of the H1N1 strain in 1918 was the Spanish Flu.

These days you can walk into the corner drug store and within a few minutes walk out inoculated against the flu. Each year scientists update the formula to keep up with the ever-mutating virus strains.

In addition to the vaccine, we now know to take more steps to minimize infection. These precautions include washing our hands frequently, not touching our faces, standing at least six feet from anyone with the flu, nor touching an infected person’s phone, keyboard or other personal items. In a more general sense, we know to keep our immune systems healthy by getting enough sleep, eating right and regulating stress factors.

How can you tell if someone has the flu, not just a bad cold? Ultimately, without a medical test it is impossible to tell precisely, but here are a few guidelines.

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Common cold:

• comes on gradually

• rarely have a fever

• mild aches

• sore throat and runny nose are common

  
  

The Flu:

• sudden onset

• high fever with chills

• body aches

• fatigue

• headaches

• sore throat and runny nose are rare

Most people recover from the flu on their own and suffer no complications. But one of the main reasons to avoid contracting it is to avoid passing it on to family and friends who are elderly, very young or otherwise susceptible to disease.

Late autumn is the perfect time to get your flu shot. It only takes a few seconds and you'll be covered until the next flu season.

• webmd.com
• cdc.gov

The Quirky Beginning of Biomedical Research, with Royalty Free Images

Few of us give a second thought to popping an aspirin or any other over-the-counter painkiller for a minor ache or pain. Yet, this simple act wouldn’t be possible without the field of biomedical research.

Every parent can breathe easier knowing that there are vaccines against measles, whooping cough, polio, chickenpox, mumps, tetanus, and many other childhood diseases. Our modern world also affords us medication to help control diabetes, high blood pressure, high cholesterol, and other life-threatening conditions.

Royalty Free Images of Biomedical Research

Part of any thorough research method is the clinical trial or the testing of a medication, vaccine or health recommendation. Clinical trials have a quirky history.

The first recorded instance of a clinical trial took place in 562 BC. King Nebuchadnezzar, who was not a scientist, wanted his people in top physical condition. He ordered them to consume only meat and wine, believing these to be the most nutritious foods.

Several vegetable lovers persuaded him to be allowed to eat legumes and water instead. After 10 days the legume and water group was clearly healthier and were allowed to continue their diet. Thus, the first public health recommendation was issued.

In 1747, what is considered to be the first legitimate clinical trial took place aboard a British Navy ship. Conducted by Dr. James Lind, a Scottish Physician, in an effort to cure scurvy. Over 2 million sailors died of this malady. Purple bruises were the first signs of the disease, and if left untreated it led to death after six weeks of suffering.

Dr. Lind divided 12 afflicted sailors into 6 pairs. The 6 remedies on trial were: cider, a solution of sulfuric acid and alcohol, sea water, a paste of garlic, mustard and horseradish, vinegar and the last 2 sailors received lemons and oranges.

These two sailors were well in less than a week. However, citrus was expensive and it took another 50 years before the Navy was able to provide lemon juice to their sailors and scurvy was eradicated from life at sea.

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Today’s research and clinical trials are very different. Most medicines require 10 years of precision research, with an average of 6-7 years of trials. On top of this time investment, it is not uncommon for medicines to cost around $2.6 billion to develop.

Biomedical research continues to make strides in the fields of aging, cancer, diabetes, genetics, immunology, neuroscience, and virology.

Despite the time and monetary costs, most will agree that the value of biomedical research is worthwhile each time a life is saved, suffering is diminished or a disease is prevented.

3D Molecular Models

Dive into chemistry with 3d molecular models! See how the basic building blocks of matter form to create everything in the known universe.

Need a refresher on chemistry?

An element is a single atom characterized by the number of protons in its nucleus. Atoms bind together to form molecules, which can either be a series of the same element or different elements, making it a compound.

A molecule can be a simple pairing of one element, such as the oxygen in the air (O2) or a complex chemical compound, such as ethanol (CH5OH) or baking soda (NaHCO3), containing many different elements.

Stock Image Gallery of Molecular Models and Video

3d illustrators represent molecules in a variety of ways. There’s the classic ball and stick model, ribbon models, and the intricate hydrophobicity surface model.

CPK coloring is the most common color system for models (white for hydrogen, black for carbon, red for oxygen, etc.), but artists use a variety of different color pallets to bring uniqueness to their work (so always check the description for details about each molecule.)

Need a specific model? Ask our professional staff and we’d be happy to help you with your next chemistry project!

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Acute Flaccid Myelitis, a Growing Concern for Parents

Flu season is here, but parents have a new condition to be worried about for their kids: Acute Flaccid Myelitis, or AFM. It has been making headlines as alarming numbers of children are being paralyzed in a pattern that resembles polio scares in the past.

AFM has been in existence for a long time, but the recent rise in cases is what’s signaling danger. Polio was eradicated in the United States in 1979, however, at this point in time, there is no such future hope for AFM.

This dreaded condition has several possible causes including viruses, environmental toxins, and genetic disorders. Symptoms often follow an infection and high fever. The suspected viruses that may cause AFM include poliovirus or non-polio enteroviruses, West Nile Virus and adenoviruses.

RF Images & RM Images of Acute Flaccid Myelitis

Although adults may contract this condition, most cases are in those under 18 years old. Symptoms parents should look out for include the sudden onset of drooping eyelids, difficulty moving the eyes, loss of reflexes or weakness in the limbs.

One of the more dangerous aspects of this condition is when the muscles of the lungs are affected, causing respiratory distress. Medical help should be sought immediately upon finding any of these or similar symptoms.

Scans, such as MRIs, of the spinal cord and brain will assist in the diagnosis of AFM. It is important to rule out other conditions such as Guillain-Barre that may have similar symptoms.

We currently do not have a specific treatment for AFM, but neurologists and physical therapists can sometimes recommend methods to help relieve symptoms.

The best prevention is common sense advice that would help to avoid any type of infection. Wash your hands frequently with soap and hot water to avoid germs from others, and wear insect repellent to avoid mosquito bites that may transmit the West Nile Virus.

The Beautiful Creepy Crawly World of Francesco Tomasinelli

Biologist and photographer Francesco Tomasinelli is willing to go where few others are: damp caves where the floors, walls and ceilings are crawling with living creatures.

Once there, he pauses to take beautiful and unusual photographs. He has captured giant cockroaches eating a dead bat, a snail slowly attacking a moth, and walls blanketed with crawling insects. Needless to say, the subjects of his images include endless numbers of spiders, scorpions, centipedes, and all manner of creatures that are the stuff of nightmares.

View Stock Images of Tomasinelli’s Nature Photography

Tomasinelli says, “We are not used to considering small insects and specialized spiders that live in caves as noteworthy animals. But in recent years it has been discovered that these organisms can give us valuable indications to better understand the effects of climate change on ecosystems.” He was involved in a project called CAVELAB and has photographed in caves in Italy and Borneo.

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Having always been fascinated by nature, especially by weird, neglected animals, he travels the world seeking out insects, arachnids, reptiles, amphibians, and even carnivorous plants.

Visit Francesco Tomasinelli’s Website

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Explore the Human Microbiome

The idea of bacteria creeping through your body might be less than appetizing. We often associate the presence of bacteria in our bodies (especially in our digestive system) with infections, viruses, and food poisonings. However, scientific findings have uncovered the fact that there are also many types of good bacteria that are essential to our health. This collection of good and bad bacteria within our bodies have also been discovered to be strikingly diverse from person to person.

The definition of the human microbiome is still somewhat ambiguous and disputed but is commonly known to be the vast ecosystem of microscopic organisms (microbes) living within us. According to the National Center for Biotechnology Information (NCBI), we consist of 10-100 trillion microbiota, also known as microbial cells. These cells hold genes that determine cell behavior.

Stock Images and Stock Video of Microbes

Scientists have become specifically interested in the gut (our stomach and intestines) as a location that holds a notably vast collection of microbes. Believe it or not, the large intestine houses good bacteria, such as probiotics, that fight the bad bacteria and keeps us healthy. The ratio of good bacteria to bad can change and partly depends on your immune system or diet choices. If good bacteria becomes low in numbers, risk of infection and virus development increases.

One of the fascinating aspects of our microbiomes is that everyone's is distinctly unique. We, as humans, have a much different microbiome than other animals, but ours also differ from person to person. Even the collection of organisms in your mouth is different than the community of organisms in your gut.

Because each person's microbiome is so individualized, researchers are recognizing that this information could be valuable for practical usage in medicine. A patient's microbiome could be used similarly to a fingerprint, but instead of merely identifying the patient, medical professionals could gain a better understanding about what is going on within the patient's body and be able to make more educated predictions about procedures and treatments needed.

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As more and more scientific findings of this topic surface, it becomes increasingly more exciting to find out how this knowledge will help us solve many unanswered questions that have to do with anatomical behavior, virus prevention, and even evolution. Our microbiomes seem to be the mysterious key that could open many doors to the understanding of the human body.

• learn.genetics.utah.edu/content/microbiome
• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3426293
• http://www.nutritionnews.abbott/nutrition-as-medicine/the-role-of-the-microbiome-in-gut-health-
• 
  

The Natural History Collection

Science Source is pleased to announce it is now offering the Natural History Museum of London’s Collection online!

Completed in 1881, the Museum of Natural History in London, was one of the first museums designed for the public. Unlike its predecessors, it no longer required an application for entry and offered labels on everything on display.

The Natural History Stock Image Gallery

Today the Museum remains a center for culture and education in London. Its permanent collection contains some 80 million objects, including fossils, rocks, minerals, insects and taxidermy animals.

With multiple education programs, such as the famous “How Science Works” program, which offers hands-on workshops with microfossils, the museum is an ideal location for science enthusiasts of all ages and abilities.

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Explore the collection’s many photographs of skeletons, bird eggs, and fossils, illustrations of prehistoric creatures and much more!

Can’t make it to the gift shop? Head to our storefront below for great fossil products!

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They'll Hijack Your Body to Replicate Themselves

Zombies? Science Fiction? Fantasy? No, it’s the very real flu virus, cold virus, rabies, HIV, ebola or any other viruses.

Viruses are microscopic nonliving organisms that can only reproduce by hijacking the production mechanism inside a living host’s cells. The virus replicates itself until the cell bursts, spreading the virus further. This usually means death to each cell that becomes infected. If the host’s immune system cannot destroy the virus, ultimately it can mean a very bad outcome for the host as well.

They differ from bacteria in that bacteria are alive, reproduce through fission (splitting apart) and carry on metabolic functions such as digestion.

Stock Images of Bacteria and Viruses

Viruses cannot reproduce on their own. They need to attach themselves to a host’s cells and inject it with their DNA/RNA, taking over the cell’s “machinery” to manufacture and reproduce. This continues until the cell literally bursts. The new viruses go on the hunt for more cells to continue this cycle.

Viruses are 10 to 100 times smaller than bacteria. Common water filters can block bacteria, however viruses can pass through many common filters.

Many bacteria are beneficial and even necessary for human existence. Our digestive tracts are filled with good bacteria - Normal Flora - that help break down food and even produce vitamins, such as vitamin K, that are critical to our well-being.

We all know there are also harmful bacteria such as Streptococcus pyogenes that causes strep throat or E. coli that causes food poisoning.

But there are no beneficial viruses that we know of. In fact, a type of virus called a bacteriophage even infects and kills bacteria.

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Antibiotics are useless against viruses. Antibiotics only kill off bacteria, which is why doctors will only prescribe them once they are certain an illness is caused by a bacteria and not a virus.

Even though antiviral drugs do exist, they aren’t even able to kill viruses. They only limit a virus’s ability to develop further.

The best methods for keeping safe from these dangerous invaders in the first place is to practice basic hygiene and common sense. Washing your hands frequently, getting the flu shot, staying clear of wild animals that may carry rabies such as raccoons and avoiding contact with anyone already infected especially if they coughing or sneezing, are some of the leading precautions you can take.

• webmd.com
• wikipedia.com
• sciencedaily.com

Science in Motion – The History of Discovery in Video Montage

Have you ever wanted to step into an old etching and explore the laboratories of your favorite scientists and inventors? Short of magic, video montages provide the next best thing!

Peer into Herschel’s telescope as he gazes at the cosmos from his observatory or follow a beam of light as it refracts into a rainbow in Newton’s laboratory.

Video Montage Gallery

Beyond the fun, video montages have an educational value. By linking images together, montages provide historic continuity, allowing people to see the connections between scientific discoveries. An etching from Isaac Newton’s life may tell you something about his findings in optics, but a group of images reveals how they led to further insights into physics.

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Montages also bring clarity to scientific discoveries. By zeroing in on a lab experiment, montages highlight key components involved in the scientific process. Panning and scrolling help viewers understand the causes and effects involved in experiments, giving them a better understanding of how science works.

As classic images enter the digital sphere, video montages are providing a unique and fun visual aid for designers and educators alike. Take a closer look below!

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The Aliens are Here: Invasive Species

Diver With Lion Fish

Exotic beauty hides a deadly beast.  The lionfish is but one of over 4,000 invasive species found in the United States doing damage to wildlife, plants, our economy, and our health.

An invasive species, also called alien species, is a non-native plant or animal that may have no natural enemies and possibly possess other advantages that allow it to propagate to such a degree that it causes damage. 

This may include the killing of already endangered plants, habitat loss, damaging crops, clogging pipes in power plants or otherwise wreaking havoc.  Their success makes them impossible to eradicate and very difficult to control.

One example, the lionfish, is of great concern in the Southern United States, killing off 65% of the local fish population within two years. Some of these prey fish are critical for cleaning the coral, so the coral reefs are also dying off.

Stock Images of Invasive Animals & Plants

It's believed this invasion was caused by a few pet lionfish owners releasing them into the wild from their home aquariums.  

The lionfish has no natural predator in the United States. It is carnivorous and eats voraciously. A single female lionfish can lay over two million eggs a year. 

Lionfish are difficult to eradicate because they hang out on the sea floor, up to 1,000 ft down.  They cannot be caught by nets, nor by fishing hook and line. A diver needs to spear them one at a time. Their venomous sting is 50 times more painful than a wasp's and can take months to heal. Divers need to carry special hard-shelled containers for their catches to protect themselves from the lionfish barbs. 

This is one of approximately 4,300 invasive species currently causing loss of wildlife and income in the United States.

Fun Gifts of Scary Invasive Species

How do invasive species get here? People, and the goods we use, travel around the world very quickly and often carry uninvited species with them.

As people become more aware of invasive species and how to prevent them, the situation can improve.

In the case of the lionfish, people have discovered it is delicious to eat. High demand from restaurants is now putting a dent in the lionfish population. The lionfish will never be eradicated, but as long as we have hungry diners, there's a chance of getting them under control.

• bbc.com
• earthrangers.com
• washingtonpost.com
• wikipedia.com
• sailorsofthesea.org
• oceanservice.noaa.gov
• pbs.org
• nationalgeographic.com

A Wizard of Oz Moment for Black and White Images

 In a Wizard of Oz moment, artists are bringing full color to black and white images, while chronicling the past in a never before seen way. 

Beyond their aesthetic appeal, colorized images play an important role in education.  The famous image of Pavlov with his dogs is recognizable to many but not everyone notices all the tools involved in his findings. Digital coloring highlights these areas, helping students understand how Pavlov made his important discoveries in psychology.

In scientific images, digital color can locate everything from stars to microbes in the grayscale of SEMs and old photos, making them perfect for textbooks and other publications.

Stock Gallery of Colorized Images

Colorized images also have a historic significance. Black and white photographs may depict an event in the past but fail to capture the full appearance of an era. Historians have recently discovered that many sculptures from ancient Greece were painted. Now artists can reintroduce this color, revealing the past in a more authentic way.

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As we move forward with technology and our understanding of science and history, colorized images are playing an important role in enhancing the accuracy and beauty of stock images. Explore more in the links above.

The Fascinating Journey of Blood Through Your Body

Did you know that your body houses millions of vessels that are circulating blood at this very moment? In fact, if all the blood vessels in the average adult were connected in one line from beginning to end, they would stretch 100,000 miles. The circulatory (or cardiovascular) system carries blood all throughout your body to transport nutrients, allow for essential body functions like breathing, and maintain an overall homeostasis.

Arteries, veins, and capillaries are the three different types of blood vessels that make blood circulation possible. Veins transport deoxygenated or waste-rich blood that will eventually be filtered, and arteries carry the filtered, oxygenated blood. Capillaries are the middleman of blood circulation, as they enable the exchange of blood between arteries and veins.

Stock Video of Blood Flow and Circulatory Anatomy

Blood Drop on Finger

There are two types of blood circulation: pulmonary and systemic. Pulmonary circulation is the transportation of blood to the lungs so that the blood becomes oxygenated and can return to the heart. This oxygenated blood is then used within systemic circulation.

During systemic circulation, the heart pumps oxygenated blood out to the rest of the body through the arteries. Capillaries deoxygenate the blood by swapping out the oxygen with carbon dioxide, and they then deliver the deoxygenated blood to the veins. The veins carry the deoxygenated blood back to the heart to start the pulmonary cycle over again.

This intricate and elegant system is happening constantly within your body. Without it, you would have no digestive system or immune system, and even your hormones wouldn't be able to be expressed.

Staying healthy, hydrating, and exercising regularly can help ensure that you're taking care of your circulatory system and everything is flowing smoothly.

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• fi.edu
• ncbi.nlm.nih.gov
• innerbody.com