The World Around Us | ||||||||||||||||||||
Mountain Views News, Sierra Madre Edition [Pasadena] Saturday, February 11, 2017 | ||||||||||||||||||||
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THE WORLD AROUND US 11 Mountain Views-News Saturday, February 11, 2017 CURIOSITY ROVER SHARPENS PARADOX OF ANCIENT MARS Mars scientists are wrestling with a problem. Ample evidence says ancient Mars was sometimes wet, with water flowing and pooling on the planet’s surface. Yet the ancient Sun was about one-third less warm, and climate modelers struggle to produce scenarios that get the surface of Mars warm enough for keeping water unfrozen. A leading theory is to have a thicker carbon- dioxide atmosphere forming a greenhouse-gas blanket, helping to warm the surface of ancient Mars. However, according to a new analysis of data from NASA’s Mars rover Curiosity, Mars had far too little carbon dioxide about 3.5 billion years ago to provide enough greenhouse-effect warming to thaw water ice. The same Martian bedrock in which Curiosity found sediments from an ancient lake where microbes could have thrived is the source of the evidence adding to the quandary about how such a lake could have existed. Curiosity detected no carbonate minerals in the samples of the bedrock it analyzed. The new analysis concludes that the dearth of carbonates in that bedrock means Mars’ atmosphere when the lake existed could not have held much carbon dioxide. “We’ve been particularly struck with the absence of carbonate minerals in sedimentary rock the rover has examined,” said Thomas Bristow of NASA’s Ames Research Center, Moffett Field, California. “It would be really hard to get liquid water even if there were a hundred times more carbon dioxide in the atmosphere than what the mineral evidence in the rock tells us.” Bristow is the principal investigator for the Chemistry and Mineralogy (CheMin) instrument on Curiosity and lead author of the study, published in the Proceedings of the National Academy of Sciences. Curiosity has made no definitive detection of carbonates in any lakebed rocks sampled since it landed in Gale Crater in 2011. CheMin can identify carbonate if it makes up just a few percent of the rock. For the past two decades, researchers have used spectrometers on Mars orbiters to search for carbonate that could have resulted from an early era of more abundant carbon dioxide. They have found far less than anticipated. “It’s been a mystery why there hasn’t been much carbonate seen from orbit,” Bristow said. “You could get out of the quandary by saying the carbonates may still be there, but we just can’t see them from orbit because they’re covered by dust, or buried, or we’re not looking in the right place. The Curiosity results bring the paradox to a focus. This is the first time we’ve checked for carbonates on the ground in a rock we know formed from sediments deposited under water.” The new analysis concludes that no more than a few tens of millibars of carbon dioxide could have been present when the lake existed, or it would have produced enough carbonate for Curiosity’s CheMin to detect it. A millibar is one one-thousandth of sea-level air pressure on Earth. The current atmosphere of Mars is less than 10 millibars and about 95 percent carbon dioxide. “This analysis fits with many theoretical studies that the surface of Mars, even that long ago, was not warm enough for water to be liquid,” said Robert Haberle, a Mars-climate scientist at NASA Ames and a co-author of the paper. “It’s really a puzzle to me.” When two lines of scientific evidence appear irreconcilable, the scene may be set for an advance in understanding why they don’t agree. Curiosity is continuing to investigate ancient environmental conditions on Mars. You can contact Bob Eklund at: b.eklund@ MtnViewsNews.com. OUT TO PASTOR A Weekly Religion Column by Rev. James Snyder CHRISTOPHER Nyerges HIKING IN THE SNOW TO MT. LOWE [Nyerges is the author of “Guide to Wild Foods,” “Enter the Forest,” and “How to Survive Anywhere” who leads regular survival classes. For more information, contact him at www.ChristopherNyerges.com or Box 41834, Eagle Rock, CA 90041.] I had never been to Mount Lowe before, though I’d been to Echo Mountain many times. This was the mid-1960s. My friend George from the neighborhood was in the Boy Scouts and he’d been up there with his troop. So one winter day he offered to lead the way to the old Mount Lowe Camp. We hiked to Echo Mountain from the top of Lake Avenue, and then hiked into Castle Canyon where there was a lot of snow! I realized I was unprepared for snow when we were about halfway to Inspiration Point and my feet were already wet and cold. I was wearing some old suede shoes, which were not waterproof. My friend assured me that we were “almost there,” but every step was getting more and more difficult, and my feet were cold. I also saw the value in snowshoes during that hike, since my feet kept sinking into the holes in the snow that I made with every step. I was working hard step by step. Since then, I have worn cramp-ons on my boots, as well as primitive snowshoes that I have fabricated from willow branches. But I did not have snowshoes on that first cold day to Inspiration Point and Mount Lowe Tavern. Occasionally, where we could not readily see the trail due to the thick drifts of snow, we would step out too far and our foot would go right through the snow and we’d have to jump back to keep from falling off the cliffs. My friend began to tell me about the “tavern” -- I had not heard of it before. He was explaining the people who went there, and what they did, and for some reason, he did all his explaining in the present tense. I had pictures of a modern ski lodge up there, and I was mentally counting the change in my pocket and wondering if I’d have enough for a hot chocolate and maybe, just maybe, I’d have enough money so I could buy some chicken noodle soup. I was looking in the direction of where my friend said it was, figuring I’d be the first one to see the smoke coming from the chimney. Imagine my great shock when we hiked up to the little saddle of Inspiration Point and he said, “We’re here.” “We’re where?” I exclaimed, visibly disappointed. “Inspiration Point. This is where it was. And the old tavern is actually down where the camp is now.” His use of tense seemed more accurate now, and after a few questions, I realized to my chagrin that I would be having no hot soup or chocolate that cold afternoon. My feet were completely wet, and numb, and only moving around kept me feeling somewhat comfortable. It seemed a little easier hiking that quarter mile down to the old tavern site. There was a lot of snow, and there was much more left of the old tavern back then than you will find today. It was a wonderful and mysterious place with the stone walkways, and walls, and little trails. Only the cold kept me from exploring even more, though I returned many times to the tavern site in the years that followed. On that day, we struggled to make a small fire, using up all our matches. We had a tiny fire, which we fed pine needles, and we managed to get it bigger but we didn’t get any warmer. I think that all the fire we generated was merely steaming off the water in the wood, and we felt very little heat. George had some dried soup which we tried to cook, and I recall having a “lunch” of lukewarm “soup” with crunchy noodles. But I was cold and hungry and even crunchy not-hot soup was better than nothing. Occasionally a wind would pass through the area and we’d hear the loud wind in the treetops and lots of icicles and snow would drop from the trees. It was very much a Christmas scene. After a while of not-getting warm by the not-warm fire, we kicked some snow over it, and ran most of the way back down to the city. On a more recent visit to Echo Mountain just a few years ago, I was hiking with my hiking class from Pasadena City College. It had been a drizzly and cold day, and after we explored the ruins, we went over by the large fireplace area to have our lunch. We were surprised that a man in a t-shirt was sitting nearby, and he’d cleaned out the fireplace for his shelter. We started talking, and we were admiring all the arrowheads he’d just made from the bits of glass he’d collected from around Echo Mountain. He said he was very skilled in wilderness survival, and he made some sort of a bet with a friend about whether or not he could spend 10 days in these mountains with nothing but the clothes he was wearing. That was apparently his second day there. He knew about some edible plants, though there wasn’t much to collect. He had the tools for making fire with a bow and drill, and he’d made a quickie bow and some arrows, and had nearly finished making a batch of arrowheads. He said he was going to catch squirrels to eat, and maybe other animals. We were all mighty impressed and asked him lots of questions. I know that I would not want to spend 10 days in the snow in my t-shirt, so I gave him my magnesium fire starter, and then we departed. I told him I wanted to hear how he did in those 10 days, and gave him my address and phone number. I never did hear from him again, though I assume that if things got really tough, all he had to do was walk a few miles down to the city. It was winter, and some snow had actually fallen close to Echo Mountain, so it would have been a cold 10 days. If you’re planning any winter hikes, always carry basic gear, such as some extra food, water, fire- starter, a small pot and stove, first aid kit, and extra clothes. Always tell someone where you’re going and when you’re planning to return. THE STRANGE MYTH OF MULTITASKING I have been pondering a delicate question this week. Why is it I can only do one thing at a time? If only I could do several things at a time, I could get more accomplished. The Gracious Mistress of the Parsonage is an expert when it comes to multitasking. Although I have lived with her for over 45 years, I still do not know how she does it. She is better than a circus juggler and can juggle a dozen tasks at the same time. Not me, that is for sure! I like to do many things, but I have to do them in order and one at a time. That is how I have always done things even though I have tried to juggle two things at one time but it has never been successful. Usually, both of them fall to the floor and I have to start all over again. Every day I make a list of things I need to do and start working on them one by one. I am looking forward to the day when I will be able to accomplish everything on my list. Maybe I am just trying to do too much. Like the other day, I needed to go across town to pick up something at one of the office supply stores. Usually, I am not allowed to go into the grocery store by myself. However, when my wife found out I was going to go across town, she asked me if I would stop at the grocery store and pick up a few things. Then she handed me a list, and said, “Get everything on the list and only those things on the list.” Then she gave me one of “those looks.” It is hard for me to go into a grocery store and not pick up a few things that I want. I have never seen any ice cream that I did not want. However, when I am on strict orders with a shopping list, I don’t have any leeway at all. It started out rather well. She handed me the list and I put it in my pocket and headed for the front door. As I was going out, I heard her say, “Remember, only those things on the list.” I chuckled to myself and myself chuckled back. I was on a mission and I knew I could accomplish it. My favorite office-supply store is Staples. Everybody there knows me by name because it is almost a second office for me. I have often suggested that they have some coffee there for their customers, but if that would happen, they would never get rid of me. Staples was my first stop. When I got in there I walked by the pen section. I never can walk by the pen section, I always have to stop and examine all of the pens they have there. I have a nice pen collection and I am always looking for some pen that I do not have. You never know when you are going to find something that you do not have. I love the fountain pen section. As I was looking at the fountain pens, I saw one was on sale. For someone like me who is addicted to pens, especially fountain pens, this was the end of the road. It was a beautiful pen and was only half price. How in the world could I resist this? As I examined the pen, I realized I did not have one like this in my collection. Even if I did have one like this in my collection, the temptation to purchase would be overwhelming. Therefore, I did what any pen obsessed person would do. I took it to the counter, talk to the cashier about this wonderful pen and told her how it would add dignity to my pen collection. She chatted back and told me that it was a beautiful pen. Finally, I paid for the pen and walked out to my truck. All I could think about was that wonderful new fountain pen. I could not wait to break in this new fountain pen, which is a delicate ritual that I enjoy so much. I was so happy and excited about it. When I got home, I hurried inside so I could show this brand-new addition to my pen collection to my wife and have her join me in admiring it. She glanced at it somewhat nonchalantly and then stared at me with one of those stares. It was one of those stares that indicated I was in trouble. I could not for the life of me figure out why I was in trouble. With both hands on her hips and staring at me she said, “Where are the groceries I asked you to pick up?” “Groceries?” I had forgotten all about the groceries. In fact, I had forgotten about why I went to Staples in the first place. As I headed for my truck a Scripture came to me, “Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest” (Ecclesiastes 9:10). It is hard for someone like me to focus on two things at a time. Therefore, I need to focus on what my hand can do, rather than what I cannot do. Dr. James L. Snyder is pastor of the Family of God Fellowship, 1471 Pine Road, Ocala, FL 34472. He lives with his wife in Silver Springs Shores. Call him at 352-687-4240 or e-mail jamessnyder2@att. net. The church web site is www.whatafellowship. com. Fireplace in Ye Alpine Tavern, Mt. Lowe This is the scene Christopher thought he would find on his first cold trek to Ye Alpine Tavern. We'd like to hear from you! What's on your mind? 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