Science

Before the internet took over the world, psychedelic rock band The Grateful Dead were among the first – and most influential – forces at the dawn of online communication.

The question of whether siblings' birth order shapes their personality has puzzled families and psychologists for years. What does the evidence say?

Some people are allergic to others – but the mystery of how this works is only just starting to be unravelled.

A new programme using a form of horse therapy is attempting to tackle the trauma that is thought to lie behind the high rates of arrest and imprisonment among US veterans.

There are huge gaps in what we know about sperm, from how they navigate to why sperm counts are tumbling. The BBC unravels why we know so little about this perplexing cell.

Trillions of bacteria, fungi, viruses and single-celled organisms travel the globe high in the atmosphere. Scientists are finding that they play a role in the weather and our health.

The speed at which you walk can reveal profound insights into your brain's rate of ageing – with slower walkers having smaller brains and fundamental differences in crucial structures.

Marie Curie worked with radioactive material with her bare hands. More than 100 years later, Sophie Hardach travels to Paris to trace the radioactive fingerprints she left behind.