Crossing Asia on my bike, I met countless others out to see the world on a bicycle
Emily Chappell: Exploring the world on a bicycle is an adventure like no other – it is the best way of meeting the world on its own terms
Spiky Australian grass the key to making better condoms, say researchers
Fibres from spinifex are being used to make condoms more reliable and as thin as a human hair, according to University of Queensland research
Parks are good for us – so why are they being neglected?
It may seem sensible for Brighton and Hove city council to save £175,000 a year by sacking its rangers, but the hidden costs are great
Animal-themed condoms aim to slow population growth – with grandpa’s help
Environmentalists have handed out 40,000 free ‘endangered species condoms’ on student campuses, farmers’ markets and even via elderly people
Cancer is political – as the argument about its causes shows
New research suggests that environmental factors are responsible for the huge majority of cancers; but opposing studies suggest it’s down to genetics and bad luck. Which you believe may depend on your own philosophy
Three alternative commuter bikes for those bored of hybrids
Belt drive, single speed or gravel bike? We try out three very different bikes from BMC, On One and Genesis
Is powdered food an eco-dream or just weird?
Huel and Ambronite are touting powdered meals as a low-cost, sustainable way to feed people and help protect the planet
Eating less meat isn’t just good for you, it could save the planet
The UK and US are reviewing their dietary guidelines – this is an opportunity to tackle climate change via people’s plates
Almond milk: quite good for you – very bad for the planet
Sales of the non-dairy milk alternative are on the rise. But the super-healthy nuts – mostly grown in drought-hit California – need millions of litres of water to be produced. Think twice before you pour it on your cereal
The race to remove toxic chemicals from ‘mission critical’ systems
While consumer electronics companies have made headway removing harmful chemicals from their products, doing the same with tech used in hospitals, banks and airplanes has posed a greater challengeOffice sustainability challenges: send us your tips, tales and secrets from the front lines