Native to Madagascar, naturalized in tropical and subtropical regions worldwide. Grows up to 12m tall with spreading branches of 3-5m. Features upward-arching leaves up to 3m long with yellow mid-rib. Produces yellow flowers in summer and ripens from yellow to purple
Dyson launched air purifiers in UK in 1990s, producing since 2015. Power issues can be resolved by checking outlet and power switch. Filter cleaning recommended every 12 months to prevent clogging
Activated carbon has microscopic pores with surface area exceeding 3,000 m² per gram. Produced from various sources like coconut husks, coal, or paper mill waste. Can be activated through carbonization, oxidation, or chemical impregnation
Alexander Chizhevsky created first air ioniser in 1918 for animal health. Cecil Alfred Laws invented domestic air ioniser. Air ionisers use high voltage to charge air molecules
Sansevieria was historically recognized genus, now included in Dracaena. Genus name honors Italian scientist Raimondo di Sangro. Originally named Sanseverinia by Petagna in 1787
Activated carbon is a porous material derived from wood, coconut shells or coal. It has a surface area ranging from 500 to 1500 m²/g. Contains micropores (less than 2 nm), mesopores (2-50 nm) and macropores (over 50 nm)