This alternative could protect forests and reduce greenhouse gases, from products small suburban breweries

As concerns grow over the sustainability of healthcare materials and the long-term use of fluoride, a surprising new alternative treatment for enamel decay is taking shape in the lab

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Your brain doesn’t see the world, it invents it. Welcome to the strange science of perception – and how to fix it when the illusion goes wrong

Recall is a bit like that game at the fun fair, the one where little yellow ducks bob around in the water and you have to fish them out with a flimsy rod. Our current understanding of memory and forgetfulness is that, to a degree, you don’t actually lose your memories: it just gets harder to fish them out. Once you encode something to your brain, it pretty much remains there, you just need the right hook – psychologists call them cues – to extract the memory. It could be a smell, a song, even a word that can tug the memory and haul it directly into the present. Which is all to say that remembering everything is getting harder as we get older. But there are ways we can tend to our memory to keep it working well, which is where Christian Jarrett, our psychology expert, steps in for this issue.

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