artdiamondblog.com – Page 315 – Art Diamond's web log

The Crucial Invention that Cro-Magnon’s Had and Neanderthals Lacked: the Eyed Needle

(p. 13) Both Neanderthals and Cro-Magnons coped effortlessly with abrupt climatic changes from near-temperate to extremely frigid conditions. How well, however, the Neanderthals were able to deal with deep snow cover and long months of subzero temperatures is a matter of ongoing debate. They lacked what was, perhaps, one of the most revolutionary inventions in history, and an inconspicuous one at that: the eyed needle, fashioned from a sliver of antler, bone, or ivory. If their expertise with antler is any guide, the Cro-Magnons must have been adept woodworkers in the more temperate environments of southwestern Asia. When they moved north, they settled oil a continent where antler and hone were potential replacements for wood, and where mammoth and other large animal hones had to be used as fuel in more treeless environments. With brilliant opportunism, they used small stone chisels to remove fine splinters from antler and bone, which they then ground and polished into slender needles. Carefully fashioned stone awls served as drills to make the holes for the thongs that served as thread, substitutes for the vegetable fibers used with wooden needles in their ancestral homes.

Every Cro-Magnon, man, woman, and child, must have been aware that protection from clothing came in layers, that warmth escaped from the head and extremities. As we will see, an indirect source of information on the garments they wore is the traditional clothing used by Eskimo and lntuit in very cold environments–the argument being that there are only a limited number of ways in which layered, cold-weather clothing can be fashioned from hides and skins. The needle allowed women to tailor garments from the fur and skin of different animals, such as wolves, reindeer, and arctic foxes, taking full advantage of each hide or pelt’s unique qualities to reduce the dangers of frostbite and hypothermia in environments of rapidly changing extremes.

Source:
Fagan, Brian. Cro-Magnon: How the Ice Age Gave Birth to the First Modern Humans. New York: Bloomsbury Press, 2010.

Ecosystems May Benefit from Gulf Oil Spill

“In a cold-seep community a third of a mile down in the Gulf of Mexico, the orange mat in the foreground is a colony of microbes that live on oil and gas seeping up from the seabed, starting a complex food chain that results in a dark ecosystem. In the background are tubeworms, which can grow eight feet long and live for centuries. Near the tubeworms are snail and clam shells, which appear to be empty.”

Source of caption: online version of the NYT article quoted and cited below. Source of photo: http://www.plosbiology.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjournal.pbio.0030102.g001&representation=PNG_M (The photo on the NYT site was identical, but was in a more user-friendly format at the URL just-cited.)

(p. D1) . . . , in 1977, oceanographers working in the deep Pacific stumbled on bizarre ecosystems lush with clams, mussels and big tube worms — a cornucopia of abyssal life built on microbes that thrived in hot, mineral-rich waters welling up from volcanic cracks, feeding on the chemicals that leached into the seawater and serving as the basis for whole chains of life that got along just fine without sunlight.

In 1984, scientists found that the heat was not necessary. In exploring the depths of the Gulf of Mexico, they discovered sunless habitats powered by a new form of nourishment. The microbes that founded the food chain lived not on hot minerals but on cold petrochemicals seeping up from the icy seabed.
Today, scientists have identified roughly one hundred sites in the gulf where cold-seep communities of clams, mussels and tube worms flourish in the sunless depths. And they have accumulated evidence of many more — hundreds by some estimates, thousands by others — most especially in the gulf’s deep, unexplored waters.
“It wouldn’t surprise me if there were 2,000 communities, from suburbs to cities,” said Ian R. MacDonald, an oceanographer at Florida State University who studies the dark ecosystems.
. . .
(p. D4) “There’s lots of uncertainty,” said Charles R. Fisher, a professor of biology at Pennsylvania State University, who is leading a federal study of the dark habitats and who observed the nearby community. “Our best hope is that the impact is neutral or a minor problem.”
A few scientists say the gushing oil — despite its clear harm to pelicans, turtles and other forms of coastal life — might ultimately represent a subtle boon to the creatures of the cold seeps and even to the wider food chain.
“The gulf is such a great fishery because it’s fed organic matter from oil,” said Roger Sassen, a specialist on the cold seeps who recently retired from Texas A&M University. “It’s preadapted to crude oil. The image of this spill being a complete disaster is not true.”

For the full story, see:

WILLIAM J. BROAD. “Cold, Dark and Teeming With Life.” The New York Times, Science Times Section (Tues., June 22, 2010): D1 & D4.
(Note: ellipses added.)
(Note: the online version of the article has the date June 21, 2010.)

More than a Quarter of Weathercasters Believe “Global Warming is a Scam”

(p. A1) Joe Bastardi, . . . , a senior forecaster and meteorologist with AccuWeather, maintains that it is more likely that the planet is cooling, and he distrusts the data put forward by climate scientists as evidence for rising global temperatures.

“There is a great deal of consternation among a lot of us over the readjustment of data that is going on and some of the portrayals that we are seeing,” Mr. Bastardi said in a video segment posted recently on AccuWeather’s Web site.
Such skepticism appears to be widespread among TV forecasters, about half of whom have a degree in meteorology. A study released on Monday by researchers at George Mason University and the University of Texas at Austin found that only about half of the 571 television weathercasters surveyed believed that global warming was occurring and fewer than a third believed that climate change was “caused mostly by human activities.”
More than a quarter of the weathercasters in the survey agreed with the statement “Global warming is a scam,” the researchers found.

For the full story, see:
LESLIE KAUFMAN. “Scientists and Weathercasters at Odds over Climate Change.” The New York Times (Tues., March 30, 2010): A1 & A16.
(Note: ellipsis added.)
(Note: the online version of the article was dated March 29, 2010 and had the title “Among Weathercasters, Doubt on Warming.”)

Vatican Made Bellarmine a Saint in 1930, but Still Says Galileo Erred

“A bust of Galileo at the Galileo Museum in Florence, Italy. The museum is displaying recovered parts of his body.” Source of caption and photo: online version of the NYT article quoted and cited below.

(p. A9) As a heretic he could not be given a proper church burial. But for years after his death, his followers in the circle of the grand dukes of Tuscany pushed to give him an honorable resting place.

Nearly a century later, in 1737, members of Florence’s cultural and scientific elite unearthed the scientist’s remains in a peculiar Masonic rite. Freemasonry was growing as a counterweight to church power in those years and even today looms large in the Italian popular imagination as an anticlerical force.
According to a notary who recorded the strange proceedings, the historian and naturalist Giovanni Targioni Tozzetti used a knife to slice off several fingers, a tooth and a vertebra from Galileo’s body as souvenirs but refrained, it appears, from taking his brain. The scientist was then reburied in a ceremony, “symmetrical to a beatification,” said Mr. Galluzzi.
After taking their macabre souvenirs, the group placed Galileo’s remains in an elegant marble tomb in Florence’s Santa Croce church, a pointed statement from Tuscany’s powers that they were outside the Vatican’s control. The church has long been a shrine to humanism as much as to religion, and Galileo’s permanent neighbors include Michelangelo, Machiavelli and Rossini.
. . .
Even today, centuries after Cardinal Robert Bellarmine, the pope’s theological watchdog, had Galileo arrested for preaching Copernicanism, the church has never quite managed to acknowledge that his heliocentric theory is correct. (For his part, Cardinal Bellarmine was made a saint in 1930.)
Pope John Paul II reopened the Galileo case in 1981, and in 1992 issued his committee’s findings: that the judges who condemned Galileo had erred but that the scientist had also erred in his arrogance in thinking that his theory would be accepted with no physical evidence.
. . .
. . . as recently as last fall, at a news conference introducing an exhibition of historic telescopic instruments at the Vatican Museums, the director of the Vatican’s Pontifical Council for Culture, Monsignor Gianfranco Ravasi, referred without blinking to “the errors committed by both sides” — indicating both the church and Galileo.

For the full story, see:
RACHEL DONADIO. “Florence Journal; A Museum Display of Galileo Has a Saintly Feel.” The New York Times (Fri., July 23, 2010): A1 & A9.
(Note: ellipses added.)
(Note: the online version of the article was dated July 22, 2010.)

By at Least 50,000 Years Ago Homo Sapiens “Developed the Full Battery of Cognitive Skills that We Ourselves Possess”

Before the passage quoted below, Fagan briefly discusses the two probable waves of humans spreading out from Africa, the first of which is believed to have occurred about 100,000 years ago.

(p. 10) A second, even less well-documented push seems to have taken place later, around fifty thousand years ago. This time, moderns settled throughout Near East Asia and stayed there, apparently living alongside a sparse Neanderthal population. This widely accepted theory assumes that by this rime the newcomers had all the intellectual capabilities of Homo sapiens. Just when and how they acquired them remains a major unsolved problem. All we can say is that at some point between one hundred thousand and fifty thousand years (p. 11) ago, at a seminal yet still little known moment in history Homo sapiens developed the full battery of cognitive skills that we ourselves possess.

Source:
Fagan, Brian. Cro-Magnon: How the Ice Age Gave Birth to the First Modern Humans. New York: Bloomsbury Press, 2010.
(Note: italics in original.)

Jeff Bezos’ Goal: “Earth’s Biggest Selection”

Jeff Bezos. Source of photo: online version of the NYT article quoted and cited below.

(p. 18) You’re a longtime science buff who studied electrical engineering and computer science at Princeton. Why did you want to be a bookseller in the first place?
You have to go back in time to 1994, and there’s something very unusual about the book category. There are more items in the book category than there are items in any other product category. One of the things it was obvious you could do with an online store is have a much more complete selection.

Initially, Amazon sold books exclusively, but it has since expanded into a retail omnivore that sells basketballs and vacuum cleaners and hamster food and everything under the sun. What is your goal, exactly?
We want to have earth’s biggest selection. Earth’s biggest river, earth’s biggest selection.

For the full interview, see:
DEBORAH SOLOMON. “QUESTIONS FOR Jeffrey P. Bezos; Book Learning.” The New York Times, Magazine Section (Sun., December 6, 2009): 18.

(Note: bold in original, to indicate questions by Deborah Solomon.)
(Note: the online version of the interview is dated December 2, 2009.)

Looking at Gender Gap, Claudia Goldin Sees: “Lots of Evidence of People Making Rational Choices”

(p. A2) Cornell University economists Francine D. Blau and Lawrence M. Kahn found that after adjusting for factors such as education, experience, occupation and industry, the remaining, “unexplained” gender gap in 1998 was nine percentage points. Women also are likely to interrupt their careers, often to start a family, and such breaks can derail promotions and raises.

“When you first see the numbers, you would say there is a glass ceiling,” says Harvard University economist Claudia Goldin. “And yet when you scrutinize the data, you find lots of evidence of people making rational choices.”

For the full commentary, see:
CARL BIALIK. “THE NUMBERS GUY; Not All Differences in Earnings Are Created Equal.” The Wall Street Journal (Sat., APRIL 10, 2010): A2.

Environmentalist Blue Planet Prize Winner Lovelock Endorsed Nuclear Power

“The scientist James E. Lovelock during an interview at the Algonquin Hotel in New York.” Source of caption and photo: online version of the NYT article quoted and cited below.

(p. D2) Few scientists have elicited such equivalent heaps of praise and criticism as James E. Lovelock, the British chemist, inventor and planetary diagnostician who has long foreseen a clash between humans and their planet.

His work underpins much of modern environmentalism. The electron capture detector he invented in the 1950’s produced initial measurements of dispersed traces of pesticides and ozone-destroying chlorofluorocarbons, providing a foundation for the work of Rachel Carson and for studies revealing risks to the atmosphere’s protective ozone layer.
His conception in 1972 of the planet’s chemistry, climate and veneer of life as a self-sustaining entity, soon given the name Gaia, was embraced by the Earth Day generation and was ridiculed, but eventually accepted (with big qualifications), by many biologists.
Dr. Lovelock, honored in 1997 with the Blue Planet Prize, which is widely considered the environmental equivalent of a Nobel award, has now come under attack from some environmentalists for his support of nuclear power as a way to avoid runaway “global heating” — his preferred alternative to “global warming.”
In his latest book, “The Revenge of Gaia: Why the Earth Is Fighting Back — and How We Can Still Save Humanity” (Perseus, 2006), Dr. Lovelock says that any risks posed by nuclear power are small when compared with the “fever” of heat-trapping carbon dioxide produced by burning coal, oil and other fossil fuels.

For the full interview, see:
ANDREW C. REVKIN. “A Conversation With James E. Lovelock; Updating Prescriptions for Avoiding Worldwide Catastrophe.” The New York Times, Science Times Section (Tues., September 12, 2006): D2.

“Modern” Humans Have Existed for at Least 100,000–and Maybe 200,000–Years

(p. 9) A group of geneticists headed by Rebecca Cann and Alan Wilson, using mtDNA and a sophisticated “molecular clock,” traced modern-human ancestry back to isolated African populations dating to between two hundred thousand and one hundred thousand years ago. Inevitably there was talk of an “African Eve,” a first modern woman, the hypothetical ancestor of all modern humankind. Most archaeologists gulped and took a deep breath. Cairn and her colleagues had taken Homo sapiens into new and uncharted historical territory.
. . .
(p. 10) The genetic case for an African origin for Homo sapiens seems overwhelming. The archaeologists have also stepped forward with new fossil discoveries, including a robust 195,000-year-old modern human from Omo Kibish, in Ethiopia, and three 160,000-year-old Homo sapiens skulls from Herto, also in Ethiopia. Few anthropologists now doubt that Africa was the cradle of Homo sapiens and home to the remotest ancestors of the first modern Europeans–the Cro-Magnons. The seemingly outrageous chronology of two decades ago is now accepted as historical reality.

Source:
Fagan, Brian. Cro-Magnon: How the Ice Age Gave Birth to the First Modern Humans. New York: Bloomsbury Press, 2010.
(Note: ellipsis added; italics in original.)

Action Hero Reagan Made Sure Message Could Be Heard

“William F. Buckley and Ronald Reagan in 1978, following their debate over the Panama Canal Treaty.” Source of caption and photo: online version of the NYT article quoted and cited below.

(p. 23) On the night that William F. Buckley met Ronald Reagan, the future president of the United States put his elbow through a plate-glass window. The year was 1961, and the two men were in Beverly Hills, where Buckley, perhaps the most famous conservative in America at the tender age of 35, was giving an address at a school auditorium. Reagan, a former Hollywood leading man dabbling in political activism — the Tim Robbins or Alec Baldwin of his day — had been asked to do the introductions.

But the microphone was dead, the technician was nowhere to be found and the control room was locked. As the crowd began to grumble, Reagan coolly opened one of the auditorium windows, stepped onto a ledge two stories above the street and inched his way around to the control room. He smashed his elbow through the glass and clambered in through the broken window. “In a minute there was light in the upstairs room,” Buckley later wrote, “and then we could hear the crackling of the newly animated microphone.”
This anecdote kicks off The Reagan I Knew (Basic Books, $25), a slight and padded reminiscence published posthumously this past autumn, nine months after Buckley’s death.

For the full review essay, see:
ROSS DOUTHAT. “Essay; When Buckley Met Reagan .” The New York Times, Book Review Section (Sun., January 18, 2009): 23.
(Note: bold in original.)
(Note: The online version of the review essay was dated January 16, 2009.)