Within this decade, Mates has noticed that the previously familiar cycle “has changed dramatically. What we’ve gotten the last three years is drought in June and then torrential rains in July and August,” causing complete lettuce seed crop failures two years running. This year, after golf ball-sized hail, numerous severe thunderstorms and 75mph winds, a first crop of seed never matured. Mates treated a second crop with kid gloves, trellising the plants and covering them with shade cloth in hopes they’d survive another deluge. By late September, Mates had managed a solid harvest, with enough seed to sell. Farmers are already fighting many battles in a growing season: beating back powdery mildew on cucumbers, hornworms devouring tomato leaves and strawberries plagued by verticillium rot. But for the farmers who grow the seeds that wind up in our seed packets and undergird our horticultural adventures, production has become ever more difficult.

“We are not having normal seasons any more”, said Lane Selman, an agricultural researcher at Oregon State University and founder of a seed-producer community called the Culinary Breeding Network. As the northern hemisphere shakes off its hottest summer on record, intensifying weather events threaten the variety we take for granted when we page through winter-delivered seed catalogues, dreaming of a bountiful spring.

“Every seed company is facing these problems, but they probably wouldn’t want to tell you that,” said Alan Sparks, an industry veteran who consults for Baker Creek Seeds. “‘We’ve got everything in control! Everything’s gonna be OK!’ But it’s not OK.”

Nor is Hancock the first to suggest the destruction of a once great civilisation led to the flowering of culture elsewhere. In 1882, the maverick US congressman and popular writer Ignatius Donnelly published Atlantis: The Antediluvian World which argued that a highly complex, sophisticated culture had been wiped out by a flood 10,000 years ago and claimed that its survivors had spread round the world teaching the rest of humanity the secrets of farming and architecture. Sounds familiar.

Then there were the Nazis. Many swore by the idea that a white Nordic superior race – people of “the purest blood” – had come from Atlantis. As a result, Himmler set up an SS unit, the Ahnenerbe – or Bureau of Ancestral Heritage – in 1935 to find out where people from Atlantis had ended up after the deluge had destroyed their homeland.

And that, in part, explains why the myth of an ancient, lost civilisation is so useful. It is a basic tale of a rise and fall that can be corralled and exploited for all sorts of causes. Plato meant his tale to be an allegory. Atlantis was destroyed by the gods who had grown angry with the hubris displayed by its inhabitants and so destroyed it. Don’t get too big for your boots, in other words.

As Dibble states, such claims reinforce white supremacist ideas. “They strip indigenous people of their rich heritage and instead give credit to aliens or white people.” In short, the series promotes ideas of “race science” that are outdated and long since debunked.

The world is at “boiling point” and humanity needs to redefine its relationship with nature if it is to address a web of crises, from rising prices to extreme heat and floods, according to a report released ahead of a landmark UN conference.

The research from the Stockholm Environment Institute (SEI) and the Council on Energy Environment and Water says the solutions to the interlinked planetary and inequality crisis exist, but calls for “bold science-based decision-making” to “completely rethink our way of living,”. “In many ways, the world is at boiling point – with extreme temperatures in south Asia, escalating fuel and food prices, and war and conflict,” said Åsa Persson, research director at SEI. “In our report, we seek to connect the big picture of intertwined planetary and inequality crises with the promising momentum for change that we see in public awareness and key technologies, to shift from urgency to agency”

The report’s recommendations include: Replacing GDP as the single metric to measure progress and instead focus on indicators that take “inclusive wealth” and the caring economy into account. Establishing a regular UN forum on sustainable lifestyles. A global campaign on nature-based education for children. Transforming people’s everyday relationship with nature by integrating it in cities; protecting animal welfare and shifting to more plant-based diets. It also says policymakers should draw on indigenous local knowledge.