Structure of the amyloid beta peptide   bound to the cell membrane. Scientists at Washington University  reported that they had devised the most sensitive blood test yet. Photograph: Getty Images/iStockphoto

For decades, researchers have sought a blood test for beta amyloid, the protein that is a hallmark of Alzheimer’s disease. Several groups and companie(...)

US supreme court justices Brett Kavanaugh and Neil Gorsuch, both appointed by President Donald Trump, arriving for Mr Trump’s State of the Union address in Washington in February 2019.  Photograph:  Sarah Silbiger/The New York Times

US president Donald Trump’s two supreme court appointees went to the same Jesuit high school in the Washington suburbs – at the same time. After atten(...)

Sheryl Sandberg, chief operating officer of Facebook. Photograph: Andrew Harrer/Bloomberg

After years of criticism, Facebook said on Tuesday that it would stop allowing advertisers in key categories to show their message only to people of a(...)

Ciaran Duffy and the girls at a training session at St Marys Youth Club in East Wall, Dublin. Photograph: Cyril Byrne

In an artificial all-weather football pitch beside a youth club in East Wall in Dublin, 12 small girls are running and jumping over obstacles , while (...)

The Amazon molly, an all-female species that engages in asexual reproduction. Photograph: Manfred Schartl/University of Wurzburg/Reuters

An all-female freshwater fish species called the Amazon molly that inhabits rivers and creeks along the Texas-Mexico border is living proof that sexua(...)

A Deliveroo  document bans the words ‘employees’, replacing it with ‘independent suppliers’. Photograph: Toby Melville/Reuters

Students at Washington University were offered a new course last month, entitled Calling Bullshit on the Age of Big Data. For the past couple of deca(...)

Sara Flannery Murphy: The Possessions pays homage to classic ghost stories

From Edgar Allan Poe’s The Tell-Tale Heart to Zoe Heller’s modern thriller Notes on a Scandal, the unreliable narrator is a cherished fictional device(...)

All was still on the Montlake Cut, the most famous stretch of rowing water in Seattle, when Vinny Fitzpatrick arrived at dawn on Monday morning. Hi(...)

Revolutionary personalised cancer vaccines tailored to individual patients have produced highly promising results in an early clinical trial.The vacci(...)

Line-dancing in Nashville, Tennessee. Photograph: Rick Diamond/Getty Images

We almost never walk sideways over long distances, preferring to face forward. Researchers at Ohio State University have given this issue a lot of tho(...)

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