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That’s exactly what the geographer Patrick Nunn and the historian Margaret Cook at the University of the Sunshine Coast in Australia have proposed in a recent paper.

In their work, the pair describe colorful legends from northern Europe and Australia that depict rising waters, peninsulas becoming islands, and receding coastlines during that period of deglaciation thousands of years ago. Some of these stories, the researchers say, capture historical sea-level rise that actually happened—often several thousand years ago. For scholars of oral history, that makes them geomyths.

“The first time I read an Aboriginal story from Australia that seemed to recall the rise of sea levels after the last ice age, I thought, No, I don’t think this is correct,” Nunn says. “But then I read another story that recalled the same thing.

For Jo Brendryen, a paleoclimatologist at the University of Bergen in Norway who has studied the effects of deglaciation in Europe following the end of the last ice age, the idea that traditional oral histories preserve real accounts of sea-level rise is perfectly plausible.

During the last ice age, he says, the sudden melting of ice sheets induced catastrophic events known as meltwater pulses, which caused sudden and extreme sea-level rise. Along some coastlines in Europe, the ocean may have risen as much as 10 meters in just 200 years. At such a pace, it would have been noticeable to people across just a few human generations.

“These are stories based in trauma, based in catastrophe.”

That, he suggests, is why it may have made sense for successive generations to pass on tales of geological upheaval. Ancient societies may have sought to broadcast their warning: Beware, these things can happen!

the old stories still have things to teach us. As Nunn says, “The fact that our ancestors have survived those periods gives us hope that we can survive this.”

The study, in other words, isn’t about how much see level rise happens this century, but whether this century’s emissions bank enough carbon for total ice melt down—or some less drastic version. “Our analysis really looks at a 2000 year envelope,” says Strauss.

Under the ice, Greenland and Antarctica are uncharted territories. In order to calculate the rate at which those massive ice sheets slough off, Levermann says he would need to know more about the texture of the underlying rock.

In the study, the NOAA researchers argue that long-standing problems with the way temperatures are measured have masked years of sea surface warming. Once those problems are corrected for, “this hiatus or slowdown simply vanishes,” said lead study author Thomas Karl, director of NOAA's National Climatic Data Center in Asheville, N.C.

Although researchers have long known that sea surface temperatures measured by autonomous buoys run cooler than temperatures measured by ships, they have failed to account for this as they expanded their use of buoy readings over the last two decades, the study authors argued.

“The buckets, when you pull them up, tend to evaporate their water, and if they're canvas there's even more evaporation,” Karl said. “By the time people stick a thermistor in the bucket to measure temperature, it's already slightly cool.”

“If you start a short-time series on an anomalous value, you tend to get an anomalous trend,” Karl said.

A growing number of climate scientists have argued that this phenomenon, as well as other hiatus effects, are evidence of a poorly understood pattern of wind, ocean current and temperature variations that have far-reaching effects on global climate. They say the oceans have absorbed heat energy from the sun, causing Arctic ice to melt and sea levels to rise.

“One way to think about it is that global warming continued, but the oceans just juggled a bit of heat around and made the surface seem cooler for a while,” said Joshua Willis, another climate scientist at JPL.

“All of those factors are real,” Karl said. “If those factors had not occurred, the warming rate would have been even greater. … If anything we may still be underestimating the trend.” 

Sea levels have risen eight inches since 1870, according to the new report, which projects a further rise of one to four feet by the end of the century. Waters around southeast Florida could surge up to two feet by 2060, according to a report by the Southeast Florida Regional Climate Compact. A study by the Florida Department of Transportation concluded that over the next 35 years, rising sea levels will increasingly flood and damage smaller local roads in the Miami area.

“We may be sitting on a precipice of a major extinction event,”

There are clear signs already that humans are harming the oceans to a remarkable degree, the scientists found. Some ocean species are certainly overharvested, but even greater damage results from large-scale habitat loss, which is likely to accelerate as technology advances the human footprint, the scientists reported.

Coral reefs, for example, have declined by 40 percent worldwide,

Fragile ecosystems like mangroves are being replaced by fish farms, which are projected to provide most of the fish we consume within 20 years.

Mining operations, too, are poised to transform the ocean. Contracts for seabed mining now cover 460,000 square miles underwater, the researchers found, up from zero in 2000.

ecosystems may seem impervious to change.

The fossil record indicates that a number of large animal species became extinct as humans arrived on continents and islands.

But it was only after 1800, with the Industrial Revolution, that extinctions on land really accelerated.

Humans began to alter the habitat that wildlife depended on, wiping out forests for timber, plowing under prairie for farmland, and laying down roads and railroads across continents.

Over the past five centuries, researchers have recorded 514 animal extinctions on land

Raising marine fish is a different proposition. The harsh ocean environment makes production risky, and the biology of these species makes many of them difficult and costly to breed and grow.

Improvements in technology have reduced, though not eliminated, the amount of fish used in feeds, especially for farmed salmon. It now takes half as much fresh fish to raise salmon as it did 20 years ago.

Marine fish farming is currently done in sheltered bays and sea lochs. But there is growing interest in a new high-tech method that raises fish in huge submersible cages anchored far from land in the open ocean. It’s risky business, with high operating costs. Expensive infrastructure is vulnerable to intense storms.

American companies in China who refuse to toe the line on Chinese policy issues (such as the status of Taiwan and the treatment of Uighurs); the devastating results of COVID-19 in the U.S. originating from a virus that first started to spread in Wuhan; and the freedom of Taiwan to decide whether or not to eventually unify politically with China.

If such an incident occurred, perhaps in the Taiwan Straits adding in the additional factor of extreme Chinese pride and nationalism over their view of Taiwan as a sovereign part of China, it could easily spark a far larger military exchange than the warning shots and close approaches we have seen thus far.

Larger strikes from either side could follow, as could a far broader cyberattack, perhaps against critical infrastructure. Carrier strike groups on both sides could deploy head-to-head. With even more significant losses, the temptation to employ a tactical nuclear weapons – perhaps at sea, thinking it could never then escalate to a strategic exchange – might rise.

The chances of the U.S. and China stumbling into a war are real and increasing.

“At the same time I think he’s one of the very few people who’s said, okay, is there something we can do to slow how [ice] is going to change and how it will flow in the future?” she said. “This is kind of high-risk for young scientists, because everybody wants you to do what everyone else is doing. But somebody has to take those first steps.”

Fox Island Environmental Education Center, a Virginia institution that has opened up the wonders of the natural world to young people for more than 40 years, shut down in November. Between erosion and sea level rise, so much of the island’s salt marsh had disappeared that “it made it unsafe to run the program,” said Tom Ackerman, vice president for education at the Chesapeake Bay Foundation, which owns the island center.

because south Louisiana’s land is subsiding while the oceans are rising, the region has what may be the highest relative sea level rise in the country. “We’re just 10 to 30 years in front of the curve of everybody else,” he said.

Officials predict that, without action, the lab might need to shut down several dozen days each year within the next 10 to 15 years. The corrosive saltwater attacks the structure and has risen up through the soil into buried electrical cables, at one point causing a blackout. Some floods are accompanied by droves of fiddler crabs that sometimes find their way into the elevators.

Many marine labs are preparing to meet similar challenges, though they are in locations that are not yet facing the level of threat that Louisiana is.

At the Louisiana center, Ms. Conover sees educational value in their problems. Along with its mission as a scientific research facility, it is also a center for environmental education with visits from some 5,000 students each year. “If our parking lot is flooding when a group is here, we definitely talk about why we’re flooding on that given day, when five years ago we wouldn’t, given the same conditions.” That example, she said, “gives the perspective of what our coastal communities are dealing with.”

“Global sea-level rise is one of the greatest challenges facing society in the 21st century, and understanding how this phenomenon impacts coastal systems, infrastructure and the people who use them requires a regular coastal presence.”

Sumerian culture disappeared around 4,000 years ago, and the Sumerian language went extinct soon after that.

geological records point to a long period of drier weather in the Middle East around 4,200 years ago, Konfirst said. The Red Sea and the Dead Sea had increased evaporation; water levels dropped at Lake Van in Turkey, and cores from marine sediments around that period indicate increased dust in the environment.

Around the same time, 74 percent of the ancient Mesopotamian settlements were abandoned, according to a 2006 study of an archaeological site called Tell Leilan in Syria. The populated area also shrank by 93 percent, he said.

great drought, two waves of marauding nomads descended upon the region, sacking the capital city of Ur. After around 2000 B.C., ancient Sumerian gradually died off as a spoken language in the region. For the next 2,000 years, the tongue lingered on as a dead written language, similar to Latin in the Middle Ages, but has been completely extinct since then, Konfirst said.

Mr. Cantor’s support for medical research is curiously limited. He’s all for developing new treatments, but he and his colleagues have adamantly opposed “comparative effectiveness research,” which seeks to determine how well such treatments work.

, Hillary Clinton said of her Republican critics, “They just will not live in an evidence-based world.”

in his home state of Virginia — have engaged in furious witch hunts against scientists who find evidence they don’t like. True, the state has finally agreed to study the growing risk of coastal flooding; Norfolk is among the American cities most vulnerable to climate change. But Republicans in the State Legislature have specifically prohibited the use of the words “sea-level rise.”

the parties aren’t just divided on values and policy views, they’re divided over epistemology. One side believes, at least in principle, in letting its policy views be shaped by facts; the other believes in suppressing the facts if they contradict its fixed beliefs.

while Democrats, being human, often read evidence selectively and choose to believe things that make them comfortable, there really isn’t anything equivalent to Republicans’ active hostility to collecting evidence in the first place.

for all the talk of reforming and reinventing the G.O.P., the ignorance caucus retains a firm grip on the party’s heart and mind.

It would be helpful to these discussions if we had a good grasp of the facts about firearms and violence. But we don’t, because back in the 1990s conservative politicians, acting on behalf of the National Rifle Association, bullied federal agencies into ceasing just about all research into the issue.

Some Turks still view the Armenians as having been a threat to the Ottoman Empire in a time of war, and say many people of various ethnicities -- including Turks -- were killed in the chaos of war.

The Ottoman Turks, having recently entered World War I on the side of Germany and the Austro-Hungarian Empire, were worried that Armenians living in the Ottoman Empire would offer wartime assistance to Russia. Russia had long coveted control of Constantinople (now Istanbul), which controlled access to the Black Sea -- and therefore access to Russia's only year-round seaports.

How many Armenians lived in the Ottoman Empire at the start of the mass killings?Many historians agree that the number was about 2 million. However, victims of the mass killings also included some of the 1.8 million Armenians living in the Caucasus under Russian rule, some of whom were massacred by Ottoman forces in 1918 as they marched through East Armenia and Azerbaijan.

Estimates range from 300,000 to 2 million deaths between 1914 and 1923, with not all of the victims in the Ottoman Empire

Some show Ottoman soldiers posing with severed heads, others with them standing amid skulls in the dirt.The victims are reported to have died in mass burnings and by drowning, torture, gas, poison, disease and starvation. Children were reported to have been loaded into boats, taken out to sea and thrown overboard. Rape, too, was frequently reported.

“The adult eye just isn’t capable of that amount of accommodation,” she says.

At sea or in the wilderness, these friends managed to escape both from the institutions of patriarchy and from the intimate authority of women, the mothers and wives who represent a check on male freedom.

What all of these shows grasp at, in one way or another, is that nobody knows how to be a grown-up anymore. Adulthood as we have known it has become conceptually untenable.

From the start, American culture was notably resistant to the claims of parental authority and the imperatives of adulthood. Surveying the canon of American literature in his magisterial “Love and Death in the American Novel,” Leslie A. Fiedler suggested, more than half a century before Ruth Graham, that “the great works of American fiction are notoriously at home in the children’s section of the library.”

“The typical male protagonist of our fiction has been a man on the run, harried into the forest and out to sea, down the river or into combat — anywhere to avoid ‘civilization,’ which is to say the confrontation of a man and woman which leads to the fall to sex, marriage and responsibility. One of the factors that determine theme and form in our great books is this strategy of evasion, this retreat to nature and childhood which makes our literature (and life!) so charmingly and infuriatingly ‘boyish.’ ”

What Fiedler notes, and what most readers of “Huckleberry Finn” will recognize, is Twain’s continual juxtaposition of Huck’s innocence and instinctual decency with the corruption and hypocrisy of the adult world.

we’ve also witnessed the erosion of traditional adulthood in any form, at least as it used to be portrayed in the formerly tried-and-true genres of the urban cop show, the living-room or workplace sitcom and the prime-time soap opera. Instead, we are now in the age of “Girls,” “Broad City,” “Masters of Sex” (a prehistory of the end of patriarchy), “Bob’s Burgers” (a loopy post-"Simpsons” family cartoon) and a flood of goofy, sweet, self-indulgent and obnoxious improv-based web videos.

we have a literature of boys’ adventures and female sentimentality. Or, to put it another way, all American fiction is young-adult fiction.

The bad boys of rock ‘n’ roll and the pouting screen rebels played by James Dean and Marlon Brando proved Fiedler’s point even as he was making it. So did Holden Caulfield, Dean Moriarty, Augie March and Rabbit Angstrom — a new crop of semi-antiheroes

We devolve from Lenny Bruce to Adam Sandler, from “Catch-22” to “The Hangover,” from “Goodbye, Columbus” to “The Forty-Year-Old Virgin.”

Unlike the antiheroes of eras past, whose rebellion still accepted the fact of adulthood as its premise, the man-boys simply refused to grow up, and did so proudly. Their importation of adolescent and preadolescent attitudes into the fields of adult endeavor (see “Billy Madison,” “Knocked Up,” “Step Brothers,” “Dodgeball”) delivered a bracing jolt of subversion, at least on first viewing. Why should they listen to uptight bosses, stuck-up rich guys and other readily available symbols of settled male authority?

That was only half the story, though. As before, the rebellious animus of the disaffected man-child was directed not just against male authority but also against women. I

their refusal of maturity also invites some critical reflection about just what adulthood is supposed to mean. In the old, classic comedies of the studio era — the screwbally roller coasters of marriage and remarriage, with their dizzying verbiage and sly innuendo — adulthood was a fact. It was inconvertible and burdensome but also full of opportunity. You could drink, smoke, flirt and spend money.

The desire of the modern comic protagonist, meanwhile, is to wallow in his own immaturity, plumbing its depths and reveling in its pleasures.

that this is in part because we have not spent enough time contemplating the scarier half of the distribution curve of possibilities, especially its brutal long tail, or the risks beyond sea-level rise;

that there is journalistic and public-interest value in spreading the news from the scientific community, no matter how unnerving it may be;

and that, when it comes to the challenge of climate change, public complacency is a far, far bigger problem than widespread fatalism — that many, many more people are not scared enough than are already “too scared.”

The science says climate change threatens nearly every aspect of human life on this planet, and that inaction will hasten the problems. In that context, I don’t think it’s a slur to call an article, or its writer, alarmist. I’ll accept that characterization. We should be alarmed.

It is, I promise, worse than you think. If your anxiety about global warming is dominated by fears of sea-level rise, you are barely scratching the surface of what terrors are possible, even within the lifetime of a teenager today.