Light is essential for health, but most of us aren’t getting enough of it, says functional medicine practitioner Dr Damien Downing. Here’s what you need to know about light and how to put the right light back into your life

Joanna Evans scouts out full-spectrum lighting, red light therapy devices and bioavailable copper supplements

Amazing answers to your curious questions

A centrepiece of Prof Stephen Hawking’s theory of black holes states that black holes can only grow. Thanks to precision observations made with the Laser Interferometer Gravitational-Wave Observatory

The iPhone may one day come with multispectral imaging. But what is it?

Scientifically speaking, there is no such thing as ‘touching’ something. When objects with mass – any objects with mass – touch each other, they aren’t physically in contact at all. There are two reas