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The Antiguan racer belongs to the colubridae snake family, that includes other racers and rat snakes. The racer is diurnal, indicating that it is on the move throughout the day time. The Antiguan racer hides in the course of the night time in a hidden den.


ANTIGUAN RACER - The Rarest Snake in the World These kinds of serpents are harmless to people, and survive primarily on lizards. They are really ambush hunters, hiding themselves in ground cover until their preferred food, one of the area's lizard types, arrives within striking grasp. The slow-moving reptilian metabolic process allows the Antiguan racer to eat just once every 2 weeks.

The Antiguan racer keeps the somewhat unreliable distinction of being the rarest snake in the world. This snake is muted in colors with the males being darkened brown in color with off-white markings while the females are a silvery-grey with brown smudges. The female is noticeably bigger than the male, and her scalp is also bigger. The female can at…

since the onset of the 20th century when automobiles and airplanes were both invented almost simultaneously, talk of building a flying car began almost immediately. though the concept seems simple at the time, each attempt ended in failure, still the dream was unshakable. the 1960s featured a flying car in the movie Chitty Chitty Bang Bang, followed soon after by the futuristic Jetsons cartoon where George Jetson flew his vehicle to work every day the 70s and. 80s gave us more with Star Wars back to the future. now they're finally here



what is that is it a three-wheeled motorcycle no it's a helicopter and a flying car, it's the sleek and stylish pal v1, an amazing car and gyroplane hybrid from Dutch company pal V. on the road the two passenger pal V performs like a sports car accelerating from zero to 60 in just eight seconds. leaning into turns like a well engineered motorcycle, and it's an off the chart driving experience. switching to airplane is surprisingly easy, …

There are some fully driverless vehicles that might be released in the next few years, but they’re only meant for very specific uses, like long-haul trucking or taxis confined to certain streets and neighborhoods. That’s because general-purpose driving is hard! The software has to work out a lot of really tricky questions to turn information from its sensors into commands to the steering and pedals.

And despite all the money and brainpower that’s being poured into research, there are still major challenges at every step along that path. The first thing a self-driving car has to do is figure out what’s around it, and where everything is. 

It’s called the perception stage. Humans can do this at a glance, but a car needs a whole cornucopia of sensor data: cameras, radar, ultrasonic sensors, and lidar, which is basically detailed 3D radar that uses lasers instead of radio.
Today’s autonomous vehicles do pretty well at interpreting all that data to get a 3D digital model of their surrounding…

once you know the universe is expanding, you might wonder if it’s going to keep expanding somehow, or eventually stop and crunch in on itself because of the attractive force of gravity. Well, all you have to do is point your telescope at a distant galaxy, measure how fast it’s moving away from us, wait about a million years, and then do the same thing again to see if the galaxy is moving faster or slower than before.

But if you don’t have a million years to spare, here’s what you do. You look at different galaxies. Because light takes time to reach us, when we look at a galaxy far, far away, we see it as it was a long time ago. So looking at a bunch of galaxies different distances away is kind of a rough proxy for looking at the same one at different times. The light from the stars in a distant galaxy can tell us two basic things. First, its speed: light from anything moving away from you becomes redder in color (kinda like how police sirens get lower in pitch when moving away).
This r…

ever been nibbled by a mosquito, a blood sucker, or an arachnid? you most likely know the feel of an itching really good. for most people their automatic reaction is to scratch the area oh! that nice, awesome feeling of immediate relief, now you start to scratch again, and then it gets itchy over again, scientists call this the itch-scratch cycle. scientists thought that an itch is just a like some kind of pain caused by irritation in the skin cells now, we know that their are itch-specific receptors that activate itch signals. scientist can see an overlap in the nerves that transmit signels.

The sharp sensation of your nails on your skin stimulates certain pain receptors, and that sends pain signals to your brain that overwhelm the itch ones. scratching distracts your brain for a second. once pain signals come in, the brain responds by releasing the neurotransmitter serotonin to dull them.

Serotonin is best known as the happiness chemical, but it does various things throughout the body…

It was the largest known eruption in at least the past two million years, a whole order of magnitude bigger than the 19th-century eruption of Tambora, which is the largest volcanic eruption in recorded history. The Toba eruption produced 2800 cubic kilometers of magma, deposited meters-thick layers of ash, and spewed thousands of tons of sulfuric acid and sulfur dioxide into the atmosphere.

It may have caused global temperatures to dip by as much as 10 degrees Celsius for the next decade with some cooling lasting nearly a thousand years. This was the Middle Paleolithic Period, when the height of human technology was stone tools and fire. So you get why scientists would think the giant explosion had a serious impact on the human population.
But the evidence seems to show that humanity was mostly fine. And we’re not totally sure why. The main climate effects from volcanoes come from the ash and sulfurous gases they belch out. After a big eruption, this stuff can circulate in the atmosphe…

The 2018 Nobel Prize for medicine has been jointly awarded to James Allison of the University of Texas and Tasuku Honjo of Kyoto University, for discovering a cancer therapy that involves our immune system to attack tumors.

Their game-changing discoveries in cancer treatment involve harnessing and manipulating the immune system to fight cancer. "The seminal discoveries by the two laureates constitutes a paradigmatic shift and a landmark in the fight against cancer." They are the first Nobel Prize winners of the year, as medicine or physiology is the first of five categories to be given out this week. Their discoveries have created a billion-dollar market for new cancer medicines, especially offering new options for patients fighting against melanoma, lung and bladder cancers.
immunotherapy is going to be part, it's not going to replace all those others, but it's going to be part of the therapy that essentially all cancer patients are going to receive, be receiving in …

NASA's Parker Solar Probe will soon fly closer to the Sun than any spacecraft before it-about 4 million miles from the visible surface. But getting that close to the Sun requires some fancy orbital mechanics. 

It takes 55 times more energy to go to the Sun than it does to go to Mars. Why is it so hard to get to the Sun?  The answer is related to why Earth doesn't just fall straight into the Sun, despite the strong gravitational attraction. Earth, and everything on it, is traveling very fast-about 67,000 miles per hour-in a direction that is basically always sideways relative to the Sun. If you launch a rocket from Earth, straight toward the Sun, it won't lose that sideways speed, and so it will miss the Sun. 
The only way to get the rocket to go right into the Sun is to cancel all that sideways motion. Leave even a little bit and it will miss the Sun and enter a new orbit. To cancel Earth's motion, you have to launch the spacecraft backward as fast as Earth is hurtling …

Conspiracy theorists claim that UFOs are visiting all the time and the reports are just being covered up, but honestly, they aren't very convincing. But that leaves a real riddle. In the past year, the Kepler space observatory has found hundreds of planets just around nearby stars, and if you extrapolate that data, it looks like there could be half a trillion planets just in our own galaxy. If any one in 10,000 has conditions that might support a form of life, that's still 50 million possible life-harboring planets right here in the Milky Way. So here's the riddle. 

Our Earth didn't form until about 9 billion years after the Big Bang. Countless other planets in our galaxy should have formed earlier and given life a chance to get underway billions or certainly many millions of years earlier than happened on Earth. If just a few of them had spawned intelligent life and started creating technologies, those technologies would have had millions of years to grow in complexit…

We check the time every day, all day long. But did you ever wonder - where did telling time come from? Why does it matter what time it is? Who determined the clock and why in the world are there so many different time zones?

The first form of telling time was the sundial and the earliest sundials known from the archaeological record are obelisks from nearly 5,000 years ago. Sundials indicate the time by casting a shadow onto a surface. The object that casts the shadow is a stick in the center known as a gnomon. A well-constructed sundial can measure time with remarkable accuracy, and sundials were used to monitor the performance of clocks until the modern era. 

But sundials have their limitations too. Obviously they require the sun to shine, so they don't work at all during the night when it's dark. Many different devices have been used over the years to estimate the passage of time: candles and sticks of incense that burn down at fairly predictable speeds have been used, alon…

Gold, silver, and copper are actually just a few of the 70 or so chemical elements that make up the average smartphone. These can be divided into different groups, two of the most critical being rare earth elements and precious metals. Rare earths are a selection of 17 elements that are actually common in Earth’s crust and are found in many areas across the world in low concentrations. These elements have a huge range of magnetic, phosphorescent, and conductive properties that make them crucial to modern technologies. In fact, of the 17 types of rare earth metals, phones and other electronics may contain up to 16. In smartphones, these create the screen and color display, aid conductivity, and produce the signature vibrations, amongst other things.

And yet, crucial as they are, extracting these elements from the earth is linked to some disturbing environmental impacts. Rare earth elements can often be found, but in many areas, it’s not economically feasible to extract them due to low …