Google is turning 27 today and taking users on a walk down memory lane to mark the occasion with its iconic first-ever search engine logo. The world’s best-known search engine has stepped back in time for one day to feature its original logo nearly three decades ago, providing those old enough to remember it a dose of nostalgia. The OG logo features the classic primary colours synonymous with Google’s image, and includes an explanation mark, which has since become obsolete. Google was incorporated on September 4, 1998, so the reason behind marking its birthday on September remains a mystery, though...