A Finnish runner has set himself the challenge of joining the ranks of record-breaking pioneers who have made the grueling journey across Rub Al-Khali, Saudi Arabia’s Empty Quarter. Adventure runner Jukka Viljanen will set off on Dec. 6 on a 25-day journey through 1,300 km of desert terrain, with the aim of becoming the first person to run across the massive desert. The Empty Quarter is the world’s largest uninterrupted ...