Regions of repetitive DNA sequence called telomeres cap our chromosomes, with shorter telomeres being linked to Alzheimer's disease, cancer and heart disease
In a laboratory experiment, a strong T-cell response against the coronaviruses that cause common cold-like symptoms was linked to greater covid-19 immunity
A study of Facebook friend networks has shown that people from low-income households are more likely to grow up to make a higher salary if they had wealthier friends as children