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Model of bacteriophages. These are viruses that multiply inside bacteria and cause their death. In some cases they are used in the fight against bacteria instead of antibiotics. shoma81/Shutterstock

Bacteriophages: meet the viruses that hunt superbugs

As antibiotic resistance grows, scientists are turning to bacteriophages, viruses that target harmful bacteria without wiping out beneficial microbes.
Maciej Bledowski/Shutterstock.com

Headspace: can our brains get full?

Your brain doesn’t run out of space – it runs out of attention. The science of why two people can live the same moment and remember it very differently.