The past two years, though, he has used the storied indoor meet to set a different kind of standard.

WSJ: Lagat breaks US indoor 2-mile record at Millrose

For the second straight year, he's running a different event at the meet to try to set an American indoor record.

WSJ: Lagat seeks another record at Millrose Games

It happened just a short walk from where the charity Skateistan had set up an indoor skateboarding facility where the sisters were among the most frequent visitors - learning English and crafts as well as how to grind a board.

CNN: Wounded Afghan sisters find hope in U.S.

Kieran Kelly set a new Irish indoor shot putt record with a throw of 18.84m and will hope to achieve the European Indoor standard (19.00m) at next weekend's UK Championships in Sheffield.

BBC: Ohuruogu beaten in Irish Indoors

It would be a world record set indoors, but not a world indoor record.

BBC: When is a record not a record?

The company, set up by US entrepreneurs, says indoor air pollution by Kerosene fumes kills 1.5m people per year.

BBC: Solar lamp wins award for helping developing countries

Londoner Idowu, who is the defending Commonwealth Games and world indoor champion, beat his previous best of 17.68, set in 2002, although he has jumped 17.75 indoors.

BBC: Idowu wins Britain's second gold

So it is possible to set an "absolute" world record indoors which will stand as a world indoor record as well as supplanting the existing world (outdoor) record.

BBC: When is a record not a record?