Fool’s gold: what fish oil is doing to our health and the planet

Omega-3 is one of our favourite supplements – but a huge new study has found it has little or no benefit. How did it become a $30bn business?

Sonic doom: how noise pollution kills thousands each year

From heart disease to type 2 diabetes, noise is having dire effects on people’s health. So who is most at risk, what can be done about it – and can you protect yourself?

The Guardian view on parks: making councils cut the grass is the only way

Editorials: Volunteers can help run green spaces, but the state must play a role

Why you’re probably a ‘reducetarian’ – and you may not even know it

Messages about healthy eating have prompted 40% of us to cut down on the amount of meat and dairy we consume – often without realising we’re doing it

Trees of life: forest bathing blossoms in Britain

The Japanese art of forest bathing has arrived in Britain’s woodlands. Now we can all dip a toe in, writes Joanne O’Connor

Pollutionwatch: bicycles take over City of London rush hour

Traffic has fallen 40% in the City since 1999, which is good news for air pollution – and people’s fitness

Campaigners call on UK retailers to stop stocking Antarctic krill products

Greenpeace wants health shops like Boots to follow the lead of Holland & Barrett and ditch products that threaten the pristine waters home to penguins, seal and whales

Epitaph for the Ash by Lisa Samson – review

Lisa Samson’s reflections on Britain’s dying ash trees at a time of her own illness is a remarkable labour of love

Scotland’s beauty is too much for those who can’t resist the urge to concrete it over

We live in one of the happiest places on Earth, which is why it must be protected

UK’s small abattoirs struggle as profit margins are squeezed

Demand for locally sourced meat may be high but suppliers face uncertain regulatory and economic environment