translation.ar: متوسط معدل الاعمار زاد بمقدار الضعف منذ 1840 وهي حاليا تزيد بمقدار حوالي خمس ساعات يوميا
translation.en: The average lifespan’s more than doubled since 1840, and it’s increasing currently at the rate of about five hours every day.