Science A brief, 20,000-year history of timekeeping by പലതുള്ളി November 14, 2017 by പലതുള്ളി November 14, 2017 Over millennia, humankind’s time-tracking has grown increasingly precise. Sundials divided days into hours. Clocks broke hours into quarters and minutes, and finally minutes into seconds. As timepieces evolved, so did… Read more 0 FacebookTwitterWhatsappTelegramEmail