The scene after an Amtrak high-speed train derailled from an overpass near the city of Tacoma, Washington state. Photograph: Getty Images

The train that careered off an overpass in Washington state, killing at least three people, was travelling 50mph (80km/h) over the speed limit when it(...)

It  is wrong to describe a fertilised ovum as a human being. It is a biological reaction. It has no head, no heart, no spine, no consciousness.

It is time we talked about the embryo. Calmly, seriously, rationally. Last week it emerged that scientists at Oregon Health and Science University h(...)

Embryonic research: scientists believe “editing” human genomes could also work for other conditions caused by mutations such as cystic fibrosis and some breast cancers. Photograph: Alan Betson

The Catholic Church in Ireland has voiced its total opposition to the use of embryos in research following a breakthrough study by scientists who “edi(...)

Iranian girl Fatemah Taghizadeh (four months) was diagnosed with twisted arteries not long after her birth, said her family’s attorney. File photograph: Handout/Twitter

A four-month-old Iranian girl in need of an emergency heart surgery in Oregon has been prevented from entering the US because of Donald Trump’s 90-day(...)