Teresa Margolles, "OPERATIVO"
So here's a creepy exhibition: Teresas Margolles, who studied forensic medicine in her homeland of Mexico with collective SEMEFO (Forensic Medical Service), applies what she learned to her art -- and not just figuratively. She actually collected objects from the morgue in Mexico City to manipulate and reuse for this exhibition, which focuses on relations between Mexico and the U.S.
Y Gallery, 32–70 85th St., (718) 565-6285. May 29-July 30.

"Defining a Moment: 25 New York Artists"
Here's your chance to scope out the hot young things of the art world before they land at the MoMA. These 25 artists, each backed by a leading New York gallery, were invited to put their work up in SoHo's House of Campari for its third annual young artist series. Each have already had their first solo exhibit in New York this season or will this upcoming season. Get a leg up!
House of Campari, 54 Crosby St., (718) 483-0815. May 30–June 15.

"Arctic Hysteria: New Art from Finland”
This summer, when you start feeling loopy from the unbearable summer heat, head to P.S. 1 to cool off at this Finnish exhibition, "Arctic Hysteria." Sixteen of Finland's best contemporary artists -- intergenerational and interdisciplinary -- bring together pieces of aliens, utopias and psychedelia (we said it would mollify the heat -- not the loopiness) from our favorite Nordic land. Ice breakers and snowstorms take center stage, and we think no Finnish exhibition would be complete without a video taken from a reindeer's perspective (this one will not disappoint). Artist-musicians the Pink Twins and Kemialliset Ystavat (Finnish for "Chemical Friends") play at the opening.
P.S. 1, 22–25 Jackson Ave., Long Island City, (718) 784-2084. Opening festivities June 1, 12–6 p.m. Through Sept. 15.