cigarette residue on walls what smoke does to a wall : r/pics 4 Tips For Cleaning Smoke

The oral microbiome, first observed by Antonie van Leeuwenhoek in 1670 using his self-designed microscope, is the second-most diverse microbiome after the gut microbiome

Perhaps thats good news for the next generation, who, having access to knowledge we lack, will hopefully live longer and healthier lives.

Fifth, lack of longitudinal data prevents tracking changes in individual behaviors over time

For men, prevalence levels exceeded 40% in much of the world except sub-Saharan Africa, and were between 30% and 39% in India, as well as the USA, UK, Australia and New Zealand, where prevalence was as high as 60%70% in the late 1940s.11 By 2000, male prevalence had already declined substantially in many countries, but remained high in Eastern Europe, Southeast Asia, China, Spain (among Western Europe) and parts of Latin America