'State of the River Conference': This year's Hoosic River Watershed Association State of the River Conference will take place from 9:30 a.m. to noon Saturday in Fellowship Hall of the Williamstown Congregational Church. The main focus will be PCBs (polychlorinated biphenyls) in the Hoosic River.
Williams College chemistry professors David Richardson and Jay Thoman, and students Amanda Schott and Austin Paul, have analyzed crawfish taken from the Hoosic River and the north branch of the Green River in Massachusetts. Members of this team will report on their research findings and on other PCB studies going back to 1991.
The church is at 906 Main St., at the intersection of Main Street (Route 2) and Chapin Hall Drive in Williamstown.
Women's leadership talk: Lynn Pasquerella, Ph.D., president of Mount Holyoke College, will speak at 7 p.m. Wednesday, at Miss Hall's School, as part of the Berkshire Human Rights Speaker Series.
Pasquerella will present, "Revisiting the Promise of Women's Leadership: Uncommon Women for the Common Good," in the Woods Theater of the Elizabeth Gatchell Klein Arts Center, 492 Holmes Road, Pittsfield. The talk is free and open to the public.
The Berkshire Human Rights Speaker Series was founded by the Unitarian Universalist Meeting of South Berkshire. Presentations are usually followed by a small reception to meet the speaker. Info: www.uumsb.org/speaker_series.
Eagles Band community concert: The Eagles Band Wind Symphony Free Community Concert will be held at 7 p.m. Friday at the Colonial Theatre in Pittsfield. Tickets to this event are free, but must be ordered in advance through the Colonial Theatre's box office, (413) 997-4444 or www.berkshiretheatregroup.org.
Friday's performance will include the 60-piece Wind Symphony and 16-piece Big Band. The theme of this year's concert is travel. Information on joining the band or upcoming performances: Dick Paul, (413) 499-2071 or www.eaglesband.org.
Middle school nights at ‘The Lighthouse': On Friday nights, from 6:30 to 9:15, beginning this Friday, the Boys & Girls Club of Pittsfield will dedicate two main areas of its buildings to activities and fun for middle school-aged students only. Admission is $5.
This week, middle schoolers can rule The Lighthouse/Café area and the Big Gym. There will also be a deejay and dance party in the Pitt area. Youth of other ages will be directed to non-middle school areas of the club building.
Details: (413) 448-8258 or boysandgirlsclubofpittsfield.org.
Montessori open house series: The Montessori School of the Berkshires, 21 Patterson Road, Lenox Dale, will host open house events from 9 to 11 a.m. Saturday, and from 9 to 11:45 a.m. Wednesday, Nov. 6. In addition to meeting with faculty, staff and other Montessori school members, parents can receive a free book, "Montessori Madness," for registering.
Information and to register: BerkshireMontessori.org or by (413) 637-3662. The Montessori School of the Berkshires is open to students from 15 months through eighth grade.