Ageing refers to the process of becoming older in humans and other organisms. Bacteria, plants and some simple animals are potentially biologically immortal. Ageing involves physical, psychological and social changes over time
Gentrification is the process of affluent residents replacing lower-income residents in neighborhoods. Term derives from Old French "gententerise" meaning "of gentle birth". Ruth Glass first used term in 1964 to describe London's working-class neighborhoods
Social class divides people into hierarchical categories based on education, wealth, occupation. Three main classes: upper, middle, and lower. Class is not fixed but varies by society and historical context
First recorded school uniforms appeared in England in 1222. Christ Hospital School in London was first to use uniform in 1552. Uniforms were initially called 'blue cloak' schools
Geological disasters include earthquakes, volcanoes, landslides, avalanches, and sinkholes. Hydrological disasters involve floods, tsunamis, and limnic eruptions. Meteorological disasters encompass storms, droughts, heat/cold waves, blizzards, hailstorms, tornadoes, and wildfires
Print ads dominated advertising before TV and internet. 1893 N.K. Fairbank ad showed women scrubbing floors for Gold Dust. Women were portrayed as domestic, men as breadwinners