Will eating organic food make you healthier?

A major new study has found that organic foods contain higher levels of antioxidants and less harmful chemicals than conventionally farmed produce. But does that mean they are better for you? With your help, Karl Mathiesen investigates.

Let us know your thoughts. Post in the comments below, email karl.mathiesen.freelance@theguardian.com or tweet @karlmathiesen

Tackling climate change one rock at a time

Whitewashing a mountain in Peru, creating artificial glaciers in Ladakh and trying to hold back the ocean in the Maldives – some ingenious schemes to combat climate change are highlighted in Gaia Vince’s latest book, Adventures In The Anthropocene

Unique underwater world discovered in Pitcairn Islands

Expedition reveals 80 new species of fish, coral and algae in the pristine waters of British overseas territory in the Pacific Ocean

Do farmers really need bee-harming insecticides?

Syngenta says some farmers have no choice but to use banned neonicotinoids, which are linked to declining bee populations. But is it true that no alternatives exist? With your help, Karl Mathiesen investigates.

Let us know your thoughts. Post in the comments below, email karl.mathiesen.freelance@guardian.co.uk or tweet @karlmathiesen

Ibiza unites against oil prospectors

The waters surrounding the Balearic party island are a world heritage site – and conservationists, politicians and tourist chiefs are adamant that plans to drill in the sea must be stopped