Some 3,000 students from Baekseok University make the shape of a drop of blood at a ski resort in Pyeongchang, about 180 km (112 miles) east of Seoul February 23, 2012. The Korean National Red Cross and the university held the event for a campaign to encourage blood donation, and plan to apply for a listing for the "World's largest blood drop" by Guinness World Records. [Photo/Agencies]