Richie Diehl team charges out of the chute over trucked-in snow at the 2015 ceremonial start of the Iditarod Trail Sled Dog race in downtown Anchorage, Alaska March 7, 2015. The timed portion of the race, which typically lasts nine days or longer, begins on Monday in Fairbanks, about 300 miles (482 km) away. Traditionally held in Willow, the timed start was moved to Fairbanks this year to accommodate an alternate trail selected after race officials deemed sections of the traditional path unsafe. REUTERS/Mark Meyer (UNITED STATES - Tags: SPORT ANIMALS SOCIETY)

Simply some clips (is more exact – songs) of times of my youth. Wanted to listen suddenly... O, Nena – my goddess! %)

Klemens Torggler's door is an invention based on rotating squares, The special construction makes it possible to move the door sideways without the use of tracks. This technical trick opens up new applications for the door.