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    Impulse review: An authoritative, if dry, sexual behaviours manual

    Impulse: The science of sex and desire by psychiatrists Jon Grant and Samuel Chamberlain delivers on its bid to answer our hidden questions about sex, but it can be a little perfunctory

    Humans

    1 February 2023

    By Elle Hunt
    Everyone has a question about sex they would like answered – even if it is just “am I normal?”Beatriz Vera/shutterstock
    Impulse: The science of sex and desire
    Jon Grant and Samuel Chamberlain (Cambridge University Press)
    LET’S talk about sex – or not. Many of us have trouble striking the right tone or even finding the right words, caught between obfuscating with the birds and the bees or titillating with undue detail. For the topics too awkward to raise in person, there is always the internet, but its answers are many and highly variable.
    Factor … More

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    Stunning photos show nomadic life of Mongolian goat herders

    Mongolia produces 40 per cent of the world’s cashmere supply from its goats, but climate change and overproduction are threatening this unique way of life

    Humans

    1 February 2023

    By Matteo Fagotto
    Ganbaatar Davaasuren (known as “Bukhuu”) in Uvurkhangai province, MongoliaMatilde Gattoni
    FORTY per cent of the world’s cashmere is sourced from the windswept plateau of Mongolia.
    Bukhuu’s 14-year-old son Mungun Huleg gathers the goats before selecting those that need to be combed that dayMatilde Gattoni
    The fabric is made from the undercoats of the local goats, which develop a particularly tight fur to survive the harsh winters, where temperatures can drop as low as -40°C. In past decades, cashmere has made a fortune for local herders, becoming the main source of income for a third of the Mongolian population.Advertisement
    Tserennadmid Khaltarkhuu cuts a baby goat’s ears to mark them with the help of his childrenMatilde Gattoni
    But lately climate change and overproduction have threatened the cashmere supply, and a unique way of life with it. In Mongolia, temperatures have warmed by more than 2°C in the past 80 years, above the world average, and could rise by up to 5°C by the end of the century. Milder winters – which can negatively affect the quality of cashmere – are now followed by long, dry springs and short summers, when not enough rain falls to sustain the pastures.
    Bukhuu’s father Davaasuren Tsogt sits outside his ger (a traditional Mongolian dwelling)Matilde Gattoni
    The global cashmere boom saw the number of goats skyrocket from 10.2 million to 26.5 million, causing overgrazing and desertification. Seventy per cent of Mongolia’s pastures are already considered degraded.
    A herd of goats on a wall built from stones from the Gobi desertMatilde Gattoni
    To address the problem, local herders are reviving traditional pastureland management practices. Cooperatives have also been set up to coordinate grazing and rotation between pastures, to give nature the chance to replenish itself, and the national government has imposed a tax on livestock to curb numbers.
    Orkhontuya Oidovdagva answers the family mobile phone from the centre of a ger, where the phone is left to hang all dayMatilde Gattoni
    But so far, no alternative source of income seems a ready substitute to a fabric that has provided an economic lifeline for a nomadic way of life that would otherwise have been lost.
    A goat being combedMatilde Gattoni

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    Don’t Miss: Innervate, an EP reflecting on epilepsy by Liza Bec

    New Scientist’s weekly round-up of the best books, films, TV series, games and more that you shouldn’t miss

    Humans

    1 February 2023

    BEN HUGHES
    Listen
    Innervate is an EP by composer Liza Bec (pictured above), who almost lost their performance career to a rare epilepsy triggered by playing music. The EP spotlights the roborecorder, an instrument they built. On release 10 February.

    Read
    The Meaning of Geese is teased out by Nick Acheson, whose epic bicycle adventures trace the incoming paths of pink-footed and brent geese as they arrive from Iceland and Siberia to fill the skies of his native Norfolk, UK. On sale from 9 February.
    Dan Weill
    Visit
    Drug experiments and forays into medicines, narcotics and everyday … More

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    Arch-Conspirator review: Ancient Greek tragedy spun into sci-fi gold

    Veronica Roth’s dystopian take on Sophocles’s 2500-year-old tragedy reminds us that human nature is timeless, finds Sally Adee

    Humans

    1 February 2023

    By Sally Adee
    In an unnamed dystopia, citizens face dangerous reproductive rulesGremlin/getty images
    Arch-Conspirator
    Veronica Roth (Tor)
    THERE isn’t much world-building in Veronica Roth’s sci-fi retelling of Sophocles’s classic Greek tragedy Antigone. Then again, in Arch-Conspirator, there isn’t much world. A dusty dystopian city (Thebes in the original, but it isn’t clear where we are in the reboot) is all that remains after a thinly sketched environmental polycrisis has turned humanity into an endangered species.
    Or, at least, that is what a reader surmises. The citizens don’t seem to know much about the arid … More

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    Ancient Egyptians used exotic oils from distant lands to make mummies

    A workshop used for mummification at Saqqara in Egypt contains remnants of the substances used to make mummies, revealing many came from southern Africa or South-East Asia

    Humans

    1 February 2023

    By Michael Marshall
    Illustration of the underground embalming workshop in Saqqara in ancient EgyptNikola Nevenov
    An underground workshop found at an ancient Egyptian burial site contains ceramic vessels with traces of the substances used to make mummies. They include resins obtained from as far away as India and South-East Asia, indicating that ancient Egyptians engaged in long-distance trade.
    “We could identify a large diversity of substances which were used by the embalmers,” says Maxime Rageot at the University of Tübingen in Germany. “Few of them were locally available.”
    The workshop, dating from around 600 BC, was discovered in 2016 at Saqqara, which was the burial ground of Egyptian royalty and elites for centuries. “It was used as an elite cemetery from the very earliest moment of the Egyptian state,” says Elaine Sullivan at the University of California, Santa Cruz, who wasn’t involved in the study.Advertisement
    Close to the pyramid of Unas, archaeologists led by Ramadan Hussein, also at the University of Tübingen, found two vertical shafts dug into the ground. One was 13 metres deep and led to the embalming workshop, while the other was 30 metres deep and led to burial chambers. Hussein died in 2022.
    It is the first Egyptian embalming workshop to be found underground, says team member Susanne Beck at the University of Tübingen. This may have been to keep the process secret, but it also had the advantage of keeping decaying bodies cool.
    In the workshop, the team found 121 beakers and bowls. Many were labelled: sometimes with instructions like “to put on his head”, sometimes with names of embalming substances and sometimes with administrator titles.
    Vessels from the embalming workshop© Saqqara Saite Tombs Project, University of Tübingen, Tübingen, Germany.
    The researchers chose the nine beakers and 22 bowls with the most legible labels for analysis. They studied the chemical residues left in the bowls to find out what substances had been used during embalming and mummification.
    A host of substances, including plant oils, tars, resins and animal fats, were discovered. Two examples were cedar oil and heated beeswax. Many of the substances were known to be used in mummification, but some were new.
    One new substance was dammar, a gum-like resin obtained from trees in India and South-East Asia. The name “dammar” is a Malay word.
    The team also found elemi: a pale yellow resin resembling honey that comes from trees in the rainforests of South Asia and southern Africa.
    The dammar and elemi show that Egyptian embalming drove early globalisation, says Philipp Stockhammer at Ludwig Maximilian University in Munich, Germany, another member of the team. “You really needed to transport these resins over large distances.” It fits with other evidence of long-distance trade at the time.
    The ancient Egyptian elite liked exotic goods as much as modern capitalists, says Sullivan. At times when the state was powerful and organised, “we see a great interest in the outside world and in connections to the outside world and bringing those things from the outside world together”.
    Stockhammer and Sullivan both say that the substances were transported by chains of traders. “The Egyptians don’t have to be going to the eastern side of India themselves,” says Sullivan.

    The researchers were also able to translate two new words. Many texts on mummification refer to antiu and sefet. The former had been tentatively translated as “myrrh” or “incense”, and the latter as “a sacred oil”. However, because they were written on pieces of pottery with residue inside, it was possible to identify them. It turns out antiu is a mixture of oils or tars from conifers. Meanwhile, sefet is an unguent – an ointment or lubricant – containing plant additives.
    Many of the substances had antibacterial and antifungal properties, and were combined into elaborate mixtures. For Stockhammer, the complexity of the substances displays “enormous personal knowledge that was accumulated through these centuries of experience of embalming human individuals”.
    That fits with textual evidence that priests tasked with embalming were important people with considerable skill, says Sullivan. “They would have needed to have a lot of ritual knowledge and a lot of material knowledge,” she says. The body had to be preserved physically and rites had to be performed correctly according to the Egyptian religion. It was “both a spiritual and physical practice”.

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    Don’t Miss: Star Wars animation The Bad Batch is back with a vengeance

    New Scientist’s weekly round-up of the best books, films, TV series, games and more that you shouldn’t miss

    Humans

    25 January 2023

    Star Wars: The Bad BatchDisney
    Watch
    Star Wars: The Bad Batch returns for its second season. Presumed dead by the Empire, Clone Force 99 must decide whether to live in hiding or risk everything by fighting. Watch the animated series now on Disney+.

    Read
    Of Ice and Men is historian Fred Hogge’s entertaining take on our relationship with ice. It has shaped civilisations, from freezing our food to saving lives in medicine, as well as via melting glaciers due to climate change. On sale in the UK from 2 … More

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    M3gan review: A chilling sci-fi film about the dangers of AI care

    It pays to know what you really need from a sophisticated learning machine, particularly if you don’t want a killer robot on your hands, says Simon Ings

    Humans

    25 January 2023

    By Simon Ings
    Cady (Violet McGraw) listens as the android M3gan reads to hergeoffrey short/universal studios
    M3gan
    Gerard Johnstone
    On general release
    AFTER doing something unspeakable to a school bully’s ear, chasing him through a forest like a wolf and then driving him under the wheels of a passing car, M3gan, the world’s first “Model 3 Generative Android”, returns to comfort Cady, its inventor’s niece. “We’ve learned a valuable lesson today,” it whispers.
    So has the audience: before you ask a learning machine to do something for you, it helps if you know what that thing … More

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    How to use science (and a dash of acid) to improve your scrambled eggs

    How do you like your eggs in the morning? If the answer is extra-soft and scrambled, you need to follow these top tips for a perfect result, says Sam Wong

    Humans

    25 January 2023

    4kodiak/Getty Images
    IN THE three years since I started this column, I have somehow avoided writing about eggs, even though I cook them for breakfast most weekends. What is there to learn about such a simple food?
    Quite a lot, it turns out. An egg may look the same from day to day, but it is undergoing subtle changes even before you crack it open. Water vapour and carbon dioxide escape through tiny pores in the shell, raising the pH of the egg white. Air diffuses into the shell, expanding the tiny air sac inside. For this reason, a fresh egg sinks … More