Listen up: wearing headphones can endanger life, study finds

US research finds number of pedestrians injured while wearing headphones has tripled in six years

1992: New fears about breast implants

Concerns about the dangers of silicone breast implants are not new as this story from 20 years ago shows.

Project will give doctors the genetic information they need to choose drugs that work best and minimise side effects

US psychologist who concluded that therapy needed to change the world rather than focus on people's inner lives

Sarah Boseley: On World Aids Day, the Global Fund is collapsing. No fund means millions more in sub-Saharan Africa and beyond at risk

SNaPshot test looks for mutations in key genes of patients with cancer so they can be given the most effective drugs

Daniel Denvir: Given the comic failure of abstinence-only – 95% of Americans have premarital sex – isn't it time the US got over its hangup?

Halloween's associations with death, evil and skeletons may subconsciously put women off giving birth, claim scientists

How to Win Friends and Influence People in the Digital Age includes advice for bloggers but keeps rules of the 1936 original

Want to be fit without doing exercise? Hadley Freeman dons her special shoes to examine some of the finest products on the market