Small Australian shrub with delicate pink and purple flowers was found thanks to a popular plant ID app

Errors in measuring microplastic pollution can be corrected. Public trust in science also needs to be shored up

It is true that science is self-correcting. Over the long term this means that we can generally trust its results – but up close, correction can be a messy process. The Guardian reported last week that 20 recent studies measuring the amount of micro- and nanoplastics in the human body have been criticised in the scientific literature for methodological issues, calling their results into question. In one sense this is the usual process playing out as it should. However, the scale of the potential error – one scientist estimates that half the high-impact papers in the field are affected – suggests a systemic problem that should have been prevented.

The risk is that in a febrile political atmosphere in which trust in science is being actively eroded on issues from climate change to vaccinations, even minor scientific conflicts can be used to sow further doubt. Given that there is immense public and media interest in plastic pollution, it is unfortunate that scientists working in this area did not show more caution.

Exclusive: DNA test means patients could be offered most effective treatment first, boosting their chances of beating the disease

Scientists have developed a simple DNA blood test that can predict how well patients with breast cancer will respond to treatment.

More than 2 million people globally each year are diagnosed with the disease, which is the world’s most prevalent cancer. Although treatments have improved in recent decades, it is not easy to know which ones will work best for which patients.

These microscopic mites, which burrow under your skin and cause ferocious itching, are incredibly hard to get rid of – and cases in the UK have soared. What is causing the outbreak, and is there anything we can do about it?

Louise (not her real name) is listing the contents of a bin liner she has packed with fresh essentials in case of emergency. Clothes, toothbrushes, hairbrushes, a teddy … “Although it should be two teddies,” she re-evaluates, quickly. I can hear her trying to quell her panic.

A diehard survivalist preparing for catastrophe? Actually, a beleaguered 44-year-old mother recovering from scabies – an itchy rash caused by microscopic mites that burrow under human skin. Far-fetched as it sounds, emergency evacuation is exactly what she, her partner and children (six and four) resorted to in November in a desperate bid to beat the bugs. She is now on tenterhooks in case they return.

Newly appointed Cambridge professor says feat would accelerate scientific knowledge by an order of magnitude

Dark, hungry and inescapable: black holes are often portrayed as the ultimate cosmic villains.

But now astronomers are preparing to capture a movie of a supermassive black hole in action for the first time, in observations that could help reveal another side to these elusive – and perhaps misunderstood – space objects.

The food, beauty and pharmaceutical industries poison our self-image. GLP-1 drugs will only make them richer – and strengthen the hold they have over us

Fifty years ago, I started thinking about the demand for women to look a certain way and the rebellions against the narrow ways in which we were supposed to display (and not display) our bodies. For a while, there was a conversation about the strictures. Some young women refused to conform. Some women risked being in the bodies they had rather than embodying the dominant images of being Madonna or the whore. But troubled eating abounded, even if it wasn’t always visible, stoked by the food and diet industries and their bedfellows in the beauty and fashion industries. These industries targeted appearance as crucial to girls’ and women’s identity and their place in the world.

Today, a new kind of troubled eating is stalking the land, entirely induced by the new GLP-1 weight-loss drugs produced by pharmaceutical companies and promoted by their willing agents on social media. It is totally understandable that people want relief from obsessive and invasive thoughts about their bodies and food. The explosion of GLP-1 drugs has provided a kind of psychological peace for many who feel less frightened of their appetites.

Susie Orbach is a psychotherapist, psychoanalyst and social critic. She is the author of many books, including Bodies and Fat Is a Feminist Issue

First journey around moon with astronauts in more than 50 years could blast off in February

Nasa’s giant new moon rocket has moved to the launchpad in preparation for astronauts’ first lunar fly-around in more than half a century. The trip could blast off in February.

The 98-metre (322ft) rocket began its 1mph (1.6km/h) creep from Kennedy Space Center’s vehicle assembly building at daybreak. The trek of 4 miles took until nightfall.

Some regions of the continent have enough ice to push up sea levels by 15 metres if they all melt, but researchers don’t yet fully understand the consequences

On one side of Dr Ben Galton-Fenzi’s view across the vast Totten ice shelf, the sun sat low on the Antarctic horizon. On the other, a full moon.

The ice shelf is “flat and white”, says Galton-Fenzi. “If there’s cloud around, you lose the horizon.”

Vieillir sans voir sa mémoire décliner reste l’un des grands défis de la recherche en neurosciences. Pourtant, certaines personnes âgées déjouent les statistiques. Passé un certain âge, leurs capacités cognitives rivalisent avec celles d’adultes bien plus jeunes. Une vaste étude scientifique vient d’apporter un éclairage nouveau sur ce phénomène rare. Elle révèle que ces individus, ... Lire plus

Artemis II mission could launch on 6 February, sending astronauts on a 685,000-mile journey

Nasa is preparing to roll out its most powerful rocket yet before a mission to send astronauts around the moon and back again for the first time in more than 50 years.

The Artemis II mission is scheduled to launch from Kennedy Space Center in Florida as early as 6 February, taking its crew on a 685,000-mile round trip that will end about 10 days later with a splashdown in the Pacific Ocean.

Virunga park ranger says babies are well cared for by mother Mafuko but high infant mortality makes first weeks critical

It was noon by the time Jacques Katutu first saw the newborn mountain gorillas. Cradled in the arms of their mother, Mafuko, the tiny twins clung to her body for warmth in the forest clearing in Virunga national park, in eastern Democratic Republic of the Congo (DRC).

Katutu, head of gorilla monitoring in Virunga, has seen dozens of newborns in his 15 years as a ranger. But, he tells the Guardian, even he was touched by the sight of the fragile infant males, who face serious obstacles if they are to become silverbacks one day.

Park workers excavated 3,000 pounds of fossil and rock