›the length of time for which something exists or lasts: It is battery operated and has a lifespan of two to three years.over sth's lifespanWater entering the reservoir over its lifespan adds decaying plant matter.
In a study published recently and widely reported in the media, researchers from Harvard University School of Public Health found that people who drink a moderate amount of coffee per day are less likely to die from a range of diseases. Good news for coffee drinkers, who make up an ever-increasing proportion
choosing to eat a diet that has minimal impact on the climate, i.e. one that excludes food transported a long way or meat whose production gives rise to CO2 emissions Climate change is not normally on people’s minds when they choose what to have for lunch, but a new diet is calling for