Indoor wood fires ‘dangerous’ for some pregnant women

Study finds link between smoke-related deaths and eclampsia, helping explain worse maternal health

Giant steps: why walking in nature is good for mind, body and soul

Rather than just moving from A to B, think about your surroundings and the wider ramifications of your walk

Eat mushrooms, cut down on meat and use the microwave: the best diet for you and the planet

Scientist Tim Spector on how to boost your health, and save the planet, one forkful at a time

The great Ben Nevis glow-up: how I hiked up a mountain and became an artwork

The UK’s most stunning locations have been turned into works of art by 11,000 ‘lumenators’. Our writer grabs a geolight and gets a wind-chilled, freezing cold thrill on Britain’s tallest peak

Microplastics found in human breast milk for the first time

Exclusive: Researchers concerned over potential health impacts of chemical contaminants on babies

Toxic air pollution particles found in lungs and brains of unborn babies

Particles breathed by mothers pass to their vulnerable foetuses, with potentially lifelong consequences

Landlines by Raynor Winn review – back on the trail

The author of The Salt Path returns with another heartwarming odyssey, this time on one of the wildest walks in Britain

Increase in LED lighting ‘risks harming human and animal health’

Transition to blue light radiation across Europe increases suppression of sleep hormone melatonin, say scientists

I sat on a wet towel, my stepfather sent apocalyptic texts, but our long-term response to the UK’s heatwave must be action

As our brains return, briefly, to room temperature, it’s time to think about what we do next, writes Emma Beddington

‘I call it sauna head – your ego disappears’: how the UK got hooked on heat

From a hut by a Welsh river to a converted horsebox on the beach, saunas are appearing in unlikely spots all over the country