We're on a ward at St Thomas's Hospital, where Dan and Scott have agreed to undergo a battery of tests as part of the Epitwin Project.

BBC: 'Not-so-identical' twins may hold the key to disease

The five-story building on W. 20th St. opens its inaugural show of works by Dan Flavin and Donald Judd on Feb. 15.

FORBES: David Zwirner Opens New Manhattan Gallery