With this GoPro footage of the Penn State research reactor, you can see the intense blue glow of Cherenkov radiation which occurs when a charged particle (such as an electron) passes through a dielectric medium at a speed greater than the phase velocity of light in that medium.
Lao Tzu, author of Tao Te Ching, was a philosopher and poet of ancient China. As founder of philosophical Taoism, he's a legendary figure dated back to the 6th Century BCE and supposedly a contemporary of Confucius. Throughout history, Laozi's work has been embraced by various anti-authoritarian movements.
Ralph Waldo Emerson once said, “A man in debt is so far a slave.” Money has no intrinsic value yet we spend our days damaging our health and spirit in order to obtain it. Why do we sacrifice our well-being for it? Is it the cliché that “we just want to provide a better life for our kids than we had?” Is it just way of the civilized world? The most important question to ask, however, is what power do we have to change this way of thinking and living? The reality is simple: money is a vehicle for social control. Debt makes us good, obedient workers and citizens.
Nature is practically essential to any animal's well-being, but sometimes things don't exactly turn out the way it should. Will, a circus lion, has never experienced the feeling of actual grass or soil due to his life as a performer. For 13 years he was forced to do tricks until he was rescued by Rancho Dos Gnomos and transferred to an animal sanctuary focusing on abused and exploited animals in Brazil.
From hydro-electric dams to hydrogen powered vehicles, scientists for years have been struggling to figure out innovative ways to capture the limitless potential of water. Despite the shortcomings, new wave energy technology may be a unique approach to harnessing wave power in our oceans instead.
The idea that during sleep our minds shut down from the outside world is ancient and one that is still deeply anchored in our view of sleep today, despite some everyday life experiences and recent scientific discoveries that would tend to prove our brains don’t completely switch off from our environment.
In every culture that anthropologists have ever studied, people tell stories.
Families most frequently tell stories around the time of vacations, family reunions, (sadly) funerals, Thanksgiving and, of course, the family-oriented winter holidays of Christmas, Hanukkah and Kwanzaa.
Stories are told about times past, times present and even times yet to be. These stories mix real people and places with imaginary people and places. For instance, there was never anyone called Sherlock Holmes, but the town he lived in – London – is real. The street he lived on – Baker Street – is also real. But there is no 221B – his house number in the story. So, why do we tell these stories?
In what is being called the biggest attack on the Amazon in fifty years, Brazil has just opened a massive area of the rainforest up to mining. A formerly protected national reserve twice the size of New Jersey, which is home to several indigenous tribes, has been officially abolished and will be turned over to mining interests.
The amount of sleep adults need has once again come under the spotlight, with a recent Wall Street Journal article suggesting seven hours sleep is better than eight hours and the American Academy of Sleep Medicine drawing up guidelines surrounding sleep need.
So, what should the guidelines say? Unfortunately, when it comes to the amount of sleep adults require there is not really a “one size fits all”. Sleep need can vary substantially between individuals.
Imagine a future in which buildings tower miles over the streets below, tourists take day trips to the edge of our atmosphere, and multiple space stations can be spotted drifting across the night sky. To make this sci-fi vision a reality, we will need to create new kinds of structures that are lightweight but still strong and tough.
Cancer is big news; we often hear of some kind of cure for some version of the illness. But whether it’s a “natural cure” or a promising molecule on its way to becoming a new medicine, there are ways non-scientists can assess if the research underlying the big claims stacks up.
Here are some tips to help you evaluate whether a cure claim is justifiable (spoiler: the evidence is rarely robust enough).
In the first scenario, a man and a woman sit across from each other at a romantically lit table in a fancy restaurant texting – looking down and talking to others, maybe each other – but rarely glancing up except to place drink and food orders.
In the second, a mother walks into a diner joining friends for lunch, carrying her 2-year-old. She sets him down at the table, hands him a tablet device, takes out her smartphone, searches messages, and half listens for only occasional moments of adult conversation squeezed in between swooshes across their collective screens.
What ties them together? The distance between them. Both scenarios reflect a new phenomenon of the digital age growing ever more rapidly. It’s called “virtual distance.”
Giving feedback is unquestionably one of the most challenging tasks for any leader, as it can be painful to both the giver and receiver. It is nonetheless invaluable: Research has shown that employees recognize the importance of feedback – whether positive or negative – to their career development.
Many even welcome it, provided it’s given well. One study of nearly a thousand employees both in the U.S. and abroad found that 92 percent believed that negative feedback is effective at improving performance – “if delivered appropriately.”