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TREE-TOPIA!

Tifft Nature Preserve, 1200 Fuhrmann Blvd., will host Tree-topia!, a celebration of autumn and all things trees, from 10 a.m. to 2 p.m. Saturday. Activities include crafts, tours and more. Cost is $5. For more information or to register, call 825-6397 or visit www.sciencebuff.org.

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TIME TO READ

Barnes & Noble, 4401 Transit Road, Clarence, will hold Star Wars Reads Day from 11 a.m. to 2 p.m. Saturday. Events will include Star Wars story time at 11 a.m.; a Star War costume contest for kids at noon; a character meet and greet at 1 p.m. and an adult costume contest at 2 p.m. For more information, call 634-1011.

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PHOTOS WANTED

CEPA Gallery is looking for smartphone photos to stream throughout the Market Arcade Building during its Visions of Greater Buffalo Gala and auction. Send in a shot of your best color "vision" of Greater Buffalo (no people or pets) to submissions@cepagallery.org. Photos must be jpeg digital format, at least 1,000 pixels and no larger than 5MB. Deadline for submissions is Oct. 26. For more information, visit www.cepagallery.org or call 856-2717.

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WHAT'S UP?

The Penn Dixie Paleontological and Outdoor Education Center in Hamburg will present an astronomy night at 6 p.m. Saturday to view a variety of constellations. Cost is $3; children 2 and under free. For information, visit www.penndixie.org or call 627-4560.

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NEW EXHIBIT OPENS

The Buffalo Museum of Science, 1020 Humboldt Parkway, will open a permanent interactive science studio, "Our Marvelous Earth," at 10 a.m. Saturday. The exhibit will include a wind chamber and much more. For more information, visit www.sciencebuff.org.

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COMICS AND MORE

*The Buffalo and Erie County Public Library will hold its fourth annual Comics Fest from 11 a.m. to 5 p.m. Saturday at the Central Library, Lafayette Square. The free event will include presentations by illustrators, workshops, a trivia contest and more. For information, call 858-8900 or visit www.buffalolib.org.

*The Buffalo Comicon will be held from 10 a.m. to 5 p.m. Sunday at the Buffalo Niagara Marriott, 1340 Millersport Highway, Amherst. The event will feature an Artist Alley, a costume contest, free comics, a Star Wars re-enactment and a visit from Graham Nolan, the creator of Bane. For information, visit www.buffalocomicon.com.

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FAMILY FILM SERIES

The KeyBank Sunday Family Film Series will feature "The Amazing Spider-Man" (PG-13) at 2 p.m. Sunday at the Riviera Theatre, 67 Webster St., North Tonawanda. Cost is $2. For tickets or information, call 692-2413 or visit www.rivieratheatre.org.