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Both PDX Sci |
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| A very peculiar cliff appears in the graph of record low temperatures for Portland. | Temperature cliff | B | Feb 02 |
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| One of the unusual plants that grow in the Antarctic can be seen in Portland. | Antarctic species | B | Sep 02 |
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| Most maps of Portland have an unreasonable number of errors; Marquam Hill is especially bad. | Creative cartography on Marquam Hill | B | Apr 03 |
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| The art work displayed in the underground MAX station has a very peculiar version of pi. | Pseudo-pi | B | Jun 03 |
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| Portland has a unique science and art center: the only one in the US devoted to 3D images. | 3D Center of Art and Photography | B | Mar 04 |
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| Portland would gain greatly if it became known as a (The?) city with a highly scientifically literate public. | Can we make Portland The (a) city with science? | B | Nov 04 |
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| Portland' has a Spanish American War Memorial tucked away in an out-of-the-way spot. | Spanish American War Memorial | P | Jun 02 |
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| Portland has an unusual Walking Map: SW Portland; now also for North Portland; etc. | Stairs everywhere: SW Walking Map | P | Jul 02 |
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| Wyatt Earp's brother, Virgil, is buried in Portland. | Virgil Earp's grave | P | Oct 02 |
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| Along side one of Portland's running/biking/walking trails are hills of bricks with trees growing on them. | Columbia Brick Works: hills of bricks | P | Nov 02 |
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| Kudzu has infected Portland. | Kudzu | P | Jan 03 |
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| There was once a Portland trail so steep and slick that a cable was place along side to assist travelers. | Cable trail | P | Feb 03 |
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| One of the world’s longest pedestrian sky bridges in Portland. | Longest skybridge | P | May 03 |
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| Portland Parks maintains three, not one, rose gardens. | Three rose gardens in Portland | P | Sep 03 |
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| One Portland Park has a tricycle track. | Portland park tricycle track | P | Oct 03 |
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| A new map set of Forest Park has attracted world-wide attention. | Friends of Forest Park new map pack | P | Dec 03 |
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| One trail in Portland takes the hiker or runner 25.2 miles while crossing traffic only once. | 25.2 miles and only one road with traffic | P | Jan 04 |
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| Portland is trying to make a home for murals. | Portland and murals | P | Feb 04 |
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| Are "Marquam" and "Markham" different spellings of the same name? | Marquam and Markham | P | May 04 |
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| New trails are being built by SWTrails group: one new trail is sheltered by a freeway onramp. | New trail sheltered by freeway onramp | P | Aug 04 |
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| What makes Portland the most bike friendly US city since 1996? | Portland is bike-friendly. Why? | P | Sep 04 |
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| Who was Sauvie island named after? | Who was Sauvie? | P | Dec 04 |
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| The least daylight occurs on the winter solstice, but the earliest sunset and the latest sunrise are about two weeks from the solstice, one before, one after. | Drive to work darkest; drive home much lighter. Sunset and sunrise both getting later. | S | Jan
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| Sunburns from noon skiing on Mt Hood at Christmas don't happen, even when the sky is clear. | Sunburns start suddenly in March | S | Mar 02 |
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| Many electric clocks gain or lose a few seconds per month; some don't gain or lose at all. | Some clocks don't lose or gain; others do | S | Apr 02 |
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| The simplest math of science is proportionality. Some people easily calculate using proportions. | Ratio/proportion -- tax distribution per person | S | May 02 |
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| The simplest statistics sometimes stumps even professional mathematicians. | Monty Hall puzzle -- O4R at Da Vinci Days 2002, 2003, 2004 | S | Aug
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| Negating a negation is trickier than we might expect. | He hasn't got no food… I could care less… | S | Mar 03 |
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| Falling for deceptions; deceiving ourselves; easier than we expect: Da Vinci Days | Deceit: Magic of science. O4R @ Da Vinci Days | S | Jul 03 |
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| Magic, Deceptions, Puzzles, Illusions, Oregonians for Rationality at Da Vinci Days | O4R @ Da Vinci Days | S | Aug 03 |
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| What is energy? There are many answers, and the scientific ones will come as a surprise. | Energy is capacity to do work; can be unavailable | S | Nov 03 |
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| Can you calculate your BMI? How does it compare? Is it changing with the rest of the country? | Obesity epidemic | S | Apr 04 |
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| Man is not quite the supreme being. Some animals know kinds of things we cannot. | Magic in perceptions of other animals | S | Jun 04 |
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| "War is peace; freedom is…" But we can do better than "Knowledge is power." | Understanding, not knowledge, is the real power. | S | Oct 04 |
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| THIS INDEX of odd observations | Which of these are both Portland and science? | . | Jan 05 |
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