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iD (Ideas & Discoveries)iD (Ideas & Discoveries)

iD (Ideas & Discoveries) November 2018

iD (Ideas & Discoveries) is an intriguing science and technology magazine that delves deep to help readers discover answers to questions about science, nature, psychology, history, current events and more. With captivating photography and design and engaging editorial content, iD will have readers thinking about the world around them in a whole new way.

Country:
United States
Language:
English
Publisher:
Heinrich Bauer Publishing, L. P.
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6 Issues

IN THIS ISSUE

access_time3 min.
id reader feedback

LOWDOWN ON FLYING HIGH The July issue’s article on radiation was thought-provoking. I myself was likely exposed to the harmful radiation that exists at high altitudes, as I flew for many years across the Atlantic and Pacific as a Professional Flight Engineer on B-707, DC-8, and DC-10 aircraft. However there is no mention of the constant radiation levels that commercial pilots are subjected to on a daily basis, versus the flying public. Michael Walsh Hollywood, FL U.S. Navy Veteran 1957–1963 Thank you for dropping us a line regarding the “How Much Radiation Is There at 39,000 Feet?” article. We’re especially glad to receive correspondence from someone who has experience in this field, though we regret the exposure you have endured. Also regrettable is the absence of a mention of the radiation levels to…

access_time4 min.
are you skiing? or are you falling?

2-3 HOURS per year is the only window of time for a potential descent. The best snow conditions are in early summer. 55 DEGREE SLOPES are among the challenges posed by Ober Gabelhorn, which rises to 13,330 feet in the Valais Alps. All of the over-13,000-foot peaks on Heitz’s list have slopes of at least 50 degrees. 80 MPH is the speed Heitz hits while heading down the steepest slopes on his 6'3" carbon-reinforced freeride skis. He can descend by more than 3,000 feet per minute. This high speed lowers the risk of taking a fall. Finally, I’m there! thinks Jérémie Heitz as he turns his gaze toward the abyss below the peak of Ober Gabelhorn. With an ice axe in his hand, he has spent hours ascending the steep north face of…

access_time5 min.
a day in the life of a frog

LOCATION, LOCATION, LOCATION! What turns on a lady tree frog? Two things: a powerful voice—and shiny green skin. There is one sticky wicket, though: Tree frogs change their coloration depending on where they are. On rough ground they get darker. Only when they’re on a smooth surface in direct sunlight do they appear to be the radiant green that the ladies admire. In other words, location is everything when it comes to the mating game. LUNCH COMES WITH HIGH-SPEED DELIVERY The little gnat sitting in the grass never saw it coming. And how could it? A tree frog’s tongue can move faster than 20 mph—and most frog species are able to catch prey with their tongue more quickly than we can blink. Furthermore, a captive insect is moved toward a frog’s mouth at…

access_time2 min.
smarter in 60 seconds frogs

How do frogs land? When jumping from branch to branch frogs employ two different landing techniques: the belly flop and the reach-and-grab. To execute the belly flop, they leap forward and land on the target with their belly before they get a grip with their sticky feet and grasping toes. “That makes it easier to reach the branch, but the strain on a frog’s internal organs is very high,” explains amphibian expert Thomas Kleinteich. For the reach-and-grab technique, they grasp the target with their front or back feet, hold on with their toes, and hoist themselves up. The force exerted on the toes is up to 14 times the body weight—that’s why heavier frogs prefer the belly flop. Where do frogs spend the winter? There are around 90 species of frogs and toads…

access_time9 min.
how do you discover the end of the world?

Cold winds whip through the sails as James Cook enters the bridge of the research ship Resolution. For several minutes he stares out into the void. Instead of the fertile continent he had assumed he’d see there stretches a seemingly endless wasteland: the Antarctic ice sheet. At this point the Resolution has already been sailing for over two years, and the ship’s food supplies have nearly been exhausted. An icy silence dominates the scene, until one of the crewmen dares step forward and interrupt Cook’s reverie: “Which course should we take, sir?” The captain’s empty gaze is still fixed upon the frozen, fissured landscape. Slowly his lips pronounce the words that are so difficult for him to speak: “Before us lies the end of the world. We’re going home.” In…

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smarter in 60 seconds expeditions

Who really found America? Everyone recognizes the name Christopher Columbus, who, as we all know, “discovered” America in 1492. And many are also aware of the Viking Leif Erikson, who crossed the Atlantic to visit North America around the year 1000. However even he was probably not the first to discover the double continent. There is substantial evidence there were previous contacts between the inhabitants of Polynesia and South America. And even the ancient Egyptians may have visited America—researchers have shown that their reed boats should have been capable of crossing the ocean. Who discovered the Date Line? Between 1519 and 1522, the expedition led by Portuguese explorer Ferdinand Magellan was the first to sail around the world. There was quite a bit of confusion when the voyagers discovered they had arrived home…

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