Ione Wells visits the Rubin Observatory in Chile’s Atacama Desert.

The row between the US president and his billionaire ex-buddy may seem entertaining, but wealth and power are still dangerously merged

It would have taken a heart of stone to watch the death of the Trump-Musk bromance without laughing. Democrats passed the popcorn on Thursday night as the alliance between the world’s most powerful man and the world’s richest imploded via posts on their...

Controversial additive may be in as many as 11,000 US products and could lead to diabetes and obesity

The controversial food additive titanium dioxide likely has more toxic effects than previously thought, new peer-reviewed research shows, adding to growing evidence that unregulated nanoparticles used throughout the food system present an underestimated danger to consumers.

In nanoparticle...

The criminals told the retailer’s boss he could make things “fast and easy” if he complied with their demands.

The British journalist Dom Phillips and the Brazilian indigenous defender Bruno Pereira vanished three years ago while on a reporting trip near Brazil’s remote Javari valley. The Guardian’s Latin America correspondent, Tom Phillips, investigates what happened to them in a six-part podcast series. Find episode 2 and all future episodes by searching for Missing in the Amazon

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Biological disadvantages may be shaped in first decade of a child’s life depending on family affluence

Children from poorer backgrounds are more likely to experience biological disadvantages such as ageing faster than their more affluent counterparts, according to a study.

Academics at Imperial College London looked at data from 1,160 children aged between six and 11 from across Europe, for the...

World’s richest man says craft, which Nasa relies on to take astronauts to ISS, will be withdrawn from commission

Trump-Musk spat – latest updates

Elon Musk, the world’s richest man, on Thursday said his company SpaceX would begin decommissioning its Dragon spacecraft after he engaged in an extraordinary public fallout with Donald Trump who had threatened to cancel government contracts with...

Resilience would have made history as the first non-US commercial lander to make a successful touchdown

An attempt to land a commercially built spacecraft on the surface of the moon looked to have ended in failure on Thursday, two years after its predecessor, launched by the same Japanese company, crashed following an uncontrolled descent.

Resilience, an un-crewed vehicle from the Tokyo company...

Anne Wojcicki, ex-CEO of the DNA testing firm, put in a $305m bid, upending Regenron’s $256m agreement

DNA testing company 23andMe is back up for sale, throwing a purchase agreement reached last month into chaos, court filings show.

The board of directors of 23andMe, which filed for bankruptcy in March, had agreed to sell the company and its assets to pharmaceutical firm Regeneron for $256m...

Study finds medicines such as Ozempic associated with greater risk of developing age-related macular degeneration

Weight loss drugs could at least double the risk of diabetic patients developing age-related macular degeneration, a large-scale study has found.

Originally developed for diabetes patients, glucagon-like peptide-1 receptor agonist (GLP-1 RA) medicines have transformed how obesity is...

Research finds more than 15m in US, UK, Germany and France with MASH have not been diagnosed

More than 15 million people in the US, UK, Germany and France do not know they have the most aggressive form of fatty liver disease, according to research.

Metabolic dysfunction-associated steatotic liver disease (MASLD) – the formal name for non-alcoholic fatty liver disease – occurs in people who...