|Latest news about comet NEOWISE 2020|
|Royal Astronomical Society of Canada|
|Where to look||Evening: sunset to 11:30 PM (23:30) - Look
|Best viewing: July 22||https://youtu.be/paARzGrFksU?t=174 (Sci-Show)|
Winner of 8 awards, Rachel Carson's book "Silent Spring" is the history making bestseller that stunned the world with its terrifying revelation about our contaminated planet. No science-fiction nightmare can equal the power of this authentic and chilling portrait of the unseen destroyers which have already begun to change the shape of life as we know it. "Silent Spring" is a devastating attack on human carelessness , greed and irresponsibility. It should be read by every American who does not want it to be the epitaph of a world not very far beyond us in time.”
3) More Insanity: Manu people drink multiple cups a coffee each day then throw in one to two creamers each time. Now you have really got to think about this one: an inexpensive biologically replaceable resource (cow's milk) is served up in a one-time use plastic made from a non-renewable resource (petroleum). Suggestion: until dairy producers move their product into cardboard containers, we must reduce or eliminate the use of plastic creamers
1) according to tide gauges by sea-faring nations, sea level increased by 19.5 cm (~ 7.7 in) between 1870 and 2004 which equates to 1.44 mm per year. Radar measurements by satellites show the new value as 3.3 mm per year. So even if you do not accept the fact that the rate-of-rise is accelerating, sea level is absolutely guaranteed to rise an additional 33 cm (~ 13 in) in the next 100 years but remember that this rise is vertical. Beaches are sloped which means that tide-surges will make things a lot worse much sooner.
2) Ocean rise should not be a surprise to anyone educated in ice ages where CO2 levels normally bounce between 180 ppm (when in an ice age) vs. 280 ppm (when in an interglacial). Why? During an ice age a lot of water accumulates in glacial ice. But humanity's industrial age has pushed co2 levels more than 130 units past 280 which is pushing "the melting of ice" to a totally new place. Had we known this earlier, then none of us would have built large cities so close to the coast. I fear that Venice Italy stands as a symbol for American cities like New York, San Francisco and Miami to only name three of many.
3) Some climatologists have hypothesized that sea level on Earth (where water covers 70% of the globe) has a near-linear relationship with co2 levels where 100 pm translates into ~ 100 ft. When I first heard this I was skeptical of the units and values until I later learned that "one foot" was just their lowest starting point. But where did they get that number? Well, is now commonly accepted that humans walked to North America via the Bering Straight at a time when the ocean level was much lower than it is today. These migrations happened numerous times so it is difficult to determine the exact time periods BUT some ancient human artifacts have been located 120 ft below the current surface. So here's what worries me: let's assume that an increase in co2 levels triggers new melting which causes the ocean levels to rise even more. The industrial age increased co2 from 280 to the current value of 410 so can we assume that we will see the oceans rise another 128 feet?
Continued here: New Scientist (2 August 2017)Comment: quantum computing (as opposed to quantum communications) is the focus of much research because (entanglement aside) it primarily moves from two digital states (0+1) to three (0-middle-1) but most punters overlook the huge liquid nitrogen cooling tanks. It seems to me that memristor-based technology (with 7 or more states) might be a better candidate for certain applications like neural nets and artificial intelligence. Sci-fi author, Isaac Asimov, employed the phrase "positronic brain" as at literary device meaning "fill in the blank". I wonder if memristor technology could fill this roll
Isaac Asimov PhD
-- Isaac Asimov (Column in Newsweek, 21 January 1980)Excerpt from Wikipedia: Isaac Asimov was an atheist, a humanist, and a rationalist. He did not oppose religious conviction in others, but he frequently railed against superstitious and pseudoscientific beliefs that tried to pass themselves off as genuine science. During his childhood, his father and mother observed Orthodox Jewish traditions, though not as stringently as they had in Petrovichi, Russia; they did not, however, force their beliefs upon young Isaac. Thus he grew up without strong religious influences, coming to believe that the Torah represented Hebrew mythology in the same way that the Iliad recorded Greek mythology.
Waterloo, Ontario, Canada