City living shortens great tits’ telomeres
![urban great tit](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/06/061416_ht_greattitticker.jpg?fit=860%2C460&ssl=1)
Great tits raised in an urban environment have shorter telomeres —protective caps at the ends of chromosomes — than those raised in rural environments, researchers find.
1000zen/Flickr (CC BY 2.0)
Great tits raised in an urban environment have shorter telomeres —protective caps at the ends of chromosomes — than those raised in rural environments, researchers find.
1000zen/Flickr (CC BY 2.0)