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Showing posts from 2018

The Free Will Debate

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While the problem of free will is as old as ancient Greece, modern neuroscience is breaking new ground with the debate while drawing into question our deepest notions of consciousness, morality, and society. In 1980, Benjamin Libet conducted a study in which he asked people to flex their wrists at random, while he read their brain activity. Libet recorded the time in which they thought of acting and compared it with his data. His results demonstrated that the subjects' brains made decisions milliseconds before they did. This led many scientists to believe that people’s decisions occur without free will – a position known as determinism.Nerve Prints, Cards and Phone Cases Skeptics of Libet's study argue that it only deals with decisions on an impulse level and that other more complex decisions, such as which career to pursue or who to marry, could still be up to free will. This view reflects the classic libertarian position that at least some of our actions are freely made. Ne…

The Energy Revolution

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Renewable energy is sweeping the globe, changing our economies and the way we impact the environment.Wind farms and solar panels now power large parts of developed countries and hydropower is constantly innovating, becoming more efficient and cost-effective. Tesla's SolarCity recently released a new solar power roof, and there is talk that one-day solar panels might replace household windows, potentially reducing electric bills and carbon footprints to zero.Stock Images and Stock Video of Renewable Energy Since 2014, both the United States and the European Union have reduced their CO2 emissions, and many other developed nations have seen their emission rates decline or stabilize. Although some of this is due to stagnating economies worldwide, officials confirm that much of it is a result of the rise of natural gas, solar energy, and wind power.Nature Prints, Cell Phone Cases and Hand BagsThe cost of renewable energy has also decreased, outpacing even the decline in gas prices, maki…

Summertime: Rising Both Temperatures and Skin Cancer Concerns

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Beach weather gives us the opportunity to get outdoors, enjoy the fresh air, and soak up some Vitamin D, but also brings concerns about excessive sun exposure. With stronger and more frequent sun comes a higher risk for skin to be damaged by UV rays, making the body more susceptible to skin cancer. Skin cancer is one of the most common types of cancer. The Skin Cancer Foundation states that more people are diagnosed with skin cancer each year in the U.S. than all other cancers combined. The cause is most often UV rays from the sun or tanning beds. Skin cancer is generally categorized into two groups, melanoma, and nonmelanoma. Melanoma cancer begins in melanocytes, which are cells that produce skin pigment (melanin) and reside deep within the epidermis (the outer layer of the skin). Melanoma is known to often be more serious than nonmelanoma cancer because it has the tendency to advance and spread rapidly. The number of new melanoma cases are also on the rise. That being said, the ea…

Retro Summer Fun

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Many things have changed over the past decades, but we still look forward to the joys of summer and long, warm days of fun and relaxation. By the seaside, we still swim, build sandcastles, collect seashells, run in the sand, and sunbathe. In the woods, we enjoy a relaxing canoe paddle, a family picnic, watching butterflies, or a hike while soaking in the beauty of nature. Closer to home we do backyard cookouts, golf, ride a bike, swing on a swing, eat watermelon, play baseball or just fly a kite.Retro Stock Images of People Enjoying Summer With longer days and warm sunshine, we don't even mind outdoor chores such as mowing the lawn. Being outdoors longer has added health benefits. More and more studies show that spending time outside gives us an emotional boost. Summer improves our capacity for happiness and well-being. Retro Summer Mugs, Greeting Cards,
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Anatomy of Sports

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Ever wonder how it is possible for that one person in your yoga class to do a perfect headstand? Or have you been curious about what your joints and muscles look like when you do a backstroke in the pool? The body is capable of some amazing agility during exercise, and the anatomical behavior in the midst of an active lifestyle is just one reason to look into the benefits of staying in shape.
Stock Images and Stock Videos of Sports Anatomy
Exercise is one of the best and simplest ways to improve your health and well-being. It helps you to maintain a healthy weight, and avoiding obesity can also mean reducing the risk of many common health conditions such as hypertension, heart attack, and diabetes. Cardio is great for shedding pounds as well as boosting the health of your heart and lungs. When taking on some endurance training, your metabolism speeds up and more oxygen is able to be distributed throughout your body. This makes the heart stronger and able to distribute blood more effic…

David Scharf Scanning Electron Microscopy

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In 1965, the Cambridge Scientific Instrument Company made available the first commercial scanning electron microscope (SEM). Less than a decade later, David Scharf combined his SEM skills with his love of photography to develop new groundbreaking methods to capture images that few have ever seen before. One of his major contributions was to advance a technique of photographing living plants and animals at a time when the standard practice was to kill them beforehand. Years later, Scharf would develop his own patented method of colorizing these images using his SEM Multi-Detector Synthesizer.David Scharf Stock SEM Images Scharf is known throughout the photographic world for his unique micrographs of living creatures, plants and microtechnology.   Through his creative genius, we can observe spectacles of the microscopic world such asa closeup of a tick's mouth,monstrous marine worms,the multiple eyes of a spiderorthe common dust mite in your home. Under his microscope,allergy-causi…

The Great Barrier Reef In Peril

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Half of the Great Barrier Reef has died since 2016 and scientists say it's a direct result of climate change.
Coral lives in a symbiotic relationship with algae. Algae converts energy from the sun into food that feeds and nourishes the coral. When water temperatures rise the algae vacates, causing the coral to 'bleach' and eventually die. The results can be devastating. The bleaching spreads across miles of reef, transforming once spectacular ecosystems into barren wastelands.See Stock Images of the Reef "People often ask me, will we have a Great Barrier Reef in 50 years or 100 years?" says Terry Hughes, the director of the ARC Center of Excellence for Coral Reef Studies. "And my answer is, yes, I certainly hope so – but it's completely contingent on the near-future trajectory of greenhouse-gas emissions."

Marine Phone Case The Paris climate agreement of 2015 set a goal to prevent the globe from warming by two degrees Celsius. Since the Industrial …

AI - The Mind of the Future

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AI, technological leap or existential threat? From robotic telephone calls to self-driving cars, everywhere you look Artificial Intelligence is entering into our lives. While it might unnerve some, much of this technology falls under the category of weak or narrow AI, meaning it's designed to learn and perform a single task. Specialists are more concerned with strong AI that can adapt to different situations, acquiring new skills and knowledge. Last October, Google released a unit called Alpha Go Zero, which was able to learn the Chinese video gameGowithout human aid or programming. It did this simply by playing the game multiple times against itself.AI Prints, Phone Cases and More The full potential of strong AI is still unknown, making it a cause for concern for many. In a recent interview, the preeminent scientist and entrepreneur Elon Musk said: “We have to figure out some way to ensure that the advent of digital superintelligence is one which is symbiotic with humanity…mark …

Animal Mimicry and Camouflage

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s it a twig or an insect? A harmless moth or a scary owl? Animals have amazing tricks up their sleeves to protect themselves, take advantage of looking like another creature or looking like their environment. There are many types of animal mimicry. One example is an animal that pretends to be a totally different animal, usually much larger and stronger one, to scare off predators. The pattern on the wings of an Owl Moth (photo above) resemble the eyes and face of an owl. Stock Images of Mimicry in Nature Camouflage, where an animal resembles it's surrounding to hide from predators, is a much-studied type of mimicry. The Dead Leaf Katydid is a beautiful example. It looks just like the dead leaves it lives on. Other animals look like rocks, thorns, twigs, flowers and even bird droppings. The King Snake, which is non-poisonous, has a scale pattern like that of the Coral Snake, a type of venomous snake. It tricks predators into thinking they have encountered its very dangerous relati…

Feathered DInosaurs

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Could the giants of the Jurassic have sported feathered frills and colored plumage? Recent scientific evidence may prove this wild theory. The evolutionary connection between birds and dinosaurs has been a fierce debate among scientists for generations. Thomas Huxley first suggested the species shared a common ancestry in 1856 when he compared the fossils of Compsognathus and the first bird, Archaeopteryx lithographica. In 1876, he created a feathered model of Compsognathus and presented it at a lecture in New York City. But the preeminent dinosaur expert, Richards Owen, rejected the theory, and it laid dormant for decades.
Stock Image Gallery It was not until 1969 that John Ostrom revived the subject. His work drew new parallels between birds and dinosaurs, such as similarities in their necks, pelvises, and wrists. Quill knobs (feather access points) under the forearms of some dinosaurs as well as integumentary structures in the dorsal spines of reptiles and fish gave further support…

Lower Back Pain? You're in Good Company

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If you have lower back pain, you are in good company. According to researchers, more than 80% of all Americans will suffer from lower back pain at some point in their life. One of the reasons it is so widespread is that this pain can be caused by many conditions, some not even related to your back. The back is a complex framework of joints, bone, muscles, and ligaments, that must coordinate to do their work. The lower back supports your upper body and provides sensation and power for movement of hips, legs, and feet. Your back also houses and protects your spinal cord.Stock Images & Video About Lower Back Pain This complexity makes your back susceptible to injury and disease if not properly cared for. Muscles can be pulled, sprained, become inflamed or even torn. Bones can fracture or break. The nerves protected inside your spine may swell or get pinched. There are numerous medical conditions that may contribute as well, such as arthritis, lumbar spinal stenosis, sciatica, osteop…

Alzheimer's Disease, a Tragic Future for Our Aging Population

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An estimated 82 million people will have dementia by 2030, according to the World Health Organization. By 2050, the number of people with dementia in the U.S. will be double what it is today, and 80% of these individuals will have Alzheimer's Disease. Alzheimer's is a noncurable condition that causes problems with memory, thinking and behavior. A person can have the beginnings of Alzheimer's for years without any visible symptoms. It progressively worsens over time and never improves. Most people develop Alzheimer's after age 65, although some people may get Early-Onset Alzheimer's decades earlier.  The greatest factors in getting Alzheimer's is aging and having Alzheimer's in your family. High blood pressure, high cholesterol, and diabetes also increase the odds. Head injuries and not sleeping regularly contribute to a lesser degree as well.

At first, symptoms may not be very noticeable. Misplaced keys, a lost book, a missed appointment. After all, everyon…
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While plastic has given much to modern society, like inexpensive products and durable packaging, it's also had disastrous consequences. A recent study from Georgia University found that 18 billion pounds of plastic are dropped into the ocean each year. This has resulted in massive islands of waste forming at sea that destroy aquatic life and poison the water. One such island in the Pacific now equals the size of Texas.Stock Images of Our Polluted Oceans The chemicals in plastic often enter into fish's stomachs, making them potentially harmful to the animals that eat them, including people. "I don’t think we should be waiting for a key finding of whether or not fish are hazardous to eat,” says biologist Richard Thompson. “We have enough evidence to act.” Georgia University reports that only a fifth of all plastic is ever recycled. The problem lies mostly in developing nations but extends globally. Major cities often create landfills by waterways where plastic blows out on…

Teacher Appreciation

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Dot those i's, cross those t's, tighten up that bibliography and pipe down in the back row because this is Teacher Appreciation Week! Though you might envy their free summers and holidays off, teachers have a uniquely challenging year. According to a study by the NEA, teachers work an average of 50 hours a week and earn less money than most professionals with equivalent degrees.

On average, teachers pay $500 a year out of pocket for classroom supplies. And 65 percent of teachers also cover the cost of lunches and field trips for their kids.
While being a teacher is not the easiest or most lucrative profession, the rewards lie elsewhere. One poll revealed that 88% of people surveyed said a teacher had a positive impact on their life.Gifts for the Teach