No need to mourn summer's demise just yet -- at the Butterfly Conservatory, temperatures are always in the 80s, tropical flowers are in bloom and hundreds of colorful butterflies swirl around you under lights that simulate the sun in a rain forest. You'll see species that include monarchs, zebra longwings and paper kites, as well as learn from educational displays about butterfly habitats, adaptations and more.

WHEN | WHERE Tomorrow through May 29, at the American Museum of Natural History, Central Park West at 79th Street, Manhattan

INFO $22-$27, 212-769-5100, amnh.org


info cq per website/sly TUGBOAT RACE AND COMPETITIONID#3

Watch from land (Pier 84) or water (on a Circle Line spectator boat) as at least 15 tugboats race down a 30-block stretch of the Hudson River and participate in "nose-to-nose pushing" contests and a line-throwing competition. Back on shore, there will also be a spinach-eating contest and a tattoo competition as well.

WHEN | WHERE 10 a.m.-2 p.m. Sunday, .Pier 84, West 44th Street and Hudson River Park, Manhattan. Spectator boats board starting at 9 a.m. from Pier 83, West 42nd Street and the Westside Highway

INFO Free (Pier 84 viewing); $25, $20 64 and older, $12 children, free 2 and younger (spectator boat); 212-757-1600, workingharbor.comcq/sly

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info cq per website/slyELECTRIC ZOOID#4

Put on your dancing shoes and get ready for three days of electric music as more than 100 acts including The Chemical Brothers, Alesso and DVBSS, pictured, take over the animal-themed stages at Randall's Island. The focus of this year's festival is bigger stages, brighter lights and more interactive elements.

WHEN | WHERE 1 p.m. tomorrow through Sunday, Randall's Island Park, Randall's Island

INFO $109-$299.99 (must be 18 or older); electriczoofestival.comcq/sly