• The Amateur Astronomers Association of Pittsburgh is sponsoring star parties at dusk on May 9 and 10 at the Mingo Creek Park Observatory, Nottingham. Call 724-224-2510.

• Allegheny General Hospital is hosting a health fair, including health screenings and assessments, educational exhibits and children's activities, from 10 a.m. to 2 p.m. May 10 at its McCandless Building, 9335 McKnight Road. Call 1-877-284-2000.

• St. Clair Hospital, in conjunction with the Mt. Lebanon Community Relations Board, the Mt. Lebanon fire and police departments and Medical Rescue Team South Authority, is holding a Senior Health and Wellness Fair from 10 a.m. to 2 p.m. May 14 in the Galleria, 1500 Washington Road, Mt. Lebanon. Available are to be information on safety, legal concerns, estate and financial planning; and health screenings. Speakers include sportswriter Jim O'Brien and WQED-TV's Chris Fennimore. Call 412-942-2093.

• The Office of Behavioral Health of the Allegheny County Department of Human Services and Allegheny County Veterans' Services are sponsoring "Support for Returning Veterans -- A Community Effort" from 9 a.m. to 4 p.m. May 14 at Soldiers & Sailors National Military Museum, 4141 Fifth Ave., Oakland. The conference is free and open to the public. Registration begins at 8 a.m. To register, visit www.alleghenycounty.us/dhs/veterans.aspx. Call 412-244-1244.

• The Western Pennsylvania chapter of the American Liver Foundation is sponsoring the following events.

-- "Bid for Bachelors," 6 to 9 p.m. May 9, Privilege Ultra Lounge, 1650 Smallman St., Strip District. Servings as masters of ceremonies are KDKA-TV news anchor Sonni Abatta and B94 radio personality Bubba. Starting bids begin at $100. Cost: $25 in advance, $30 at the door. Call 412-434-7044.

-- Liver Walk, along the Southside Heritage Trail, on May 18. Registration begins at 8:30 a.m. Walkers who raise at least $100 receive a T-shirt. Call 412-434-7077.

• The University of Pittsburgh Medical Center is sponsoring a "Celebrate Life, Celebrate Art" auction at 6 p.m. May 12 at the Carnegie Museum of Art, 4400 Forbes Ave., Oakland. Call 412-441-9786 ext. 313.

• WomenHeart, the National Coalition of Women with Heart Disease, in conjunction with Clos du Bois, is holding a fund-raiser through May. Personalized cards, virtual toasts and other fund-raising opportunities are available by logging onto www.toasttomom.com.

• The UPMC Cancer Center is sponsoring a skin cancer screening from 8 a.m. to 2 p.m. May 10 in the Comprehensive Breast Center on the Cranberry campus of UPMC Passavant. Registration is required and space is limited. Call 1-800-533-8762 between 9 a.m. and 5 p.m.

• Canonsburg General Hospital is sponsoring a skin cancer screening from 4:30 to 6 p.m. May 13 in the ambulatory care department. Space is limited. Call 1-877-274-2000.

• St. Clair Hospital is sponsoring blood pressure screenings from 1 to 4 p.m. May 14 in the fourth floor lobby. Call 412-942-6280.

• The American College of Veterinary Ophthalmologists is sponsoring eye examinations for service dogs on May 14, 16 and 17 at the Pittsburgh Veterinary Specialty and Emergency Center, 882 Butler St., Shaler. The deadline is May 8. For more information, call 412-492-9920.

• To find a blood drive near you call:

-- The Central Blood Bank, 412-209-7000 or 1-800-310-9551.

-- The American Red Cross, 1-800-448-3543. For bloodmobile locations, check http://www.redcrosslife.org.

• The Washington Hospital is sponsoring a program on joint replacement surgery, 1:30 to 3:30 p.m. May 10, Wilfred R. Cameron Wellness Center, 240 Wellness Way, South Strabane. To register, call 724-250-2825.

• St. Clair Hospital is offering the following seminars in its fourth floor meeting room. Registration is required. Call 412-942-6280.

-- Treatment options for hip pain, 10 a.m. May 10.

-- Minimally invasive partial knee replacement surgery, 6 p.m. May 12.

• The Village of St. Barnabas, 5850 Meridian Road, Richland, is hosting a program, "Maintain Your Brain: How to Live a Brain-Healthy Lifestyle," at 1:30 p.m. May 14 in Village Hall in Hilltop Hall as part of its monthly "Docs Talks" series. Speaker is Lois Lutz of the Alzheimer's Association. Call 724-443-7231.

• Monongahela Valley Hospital is sponsoring a program, "Innovations in Coronary Medical Imaging," at 6 p.m. May 14 in the Anthony M. Lombardi Education Conference Center. Call 724-258-1234.

• The Center for Integrative Medicine of the University of Pittsburgh Medical Center is sponsoring a program, "The Wisdom of the Heart," at 5:30 p.m. May 15 at its office, Suite 310, 580 S. Aiken Ave., Shadyside, as part of a monthly lecture series. Call 412-623-3023.

• St. Clair Hospital is sponsoring the following classes. Call 412-942-5895 unless otherwise indicated.

-- Baby basics, 7 to 9 p.m. May 8 and 28 and 9 a.m. to 1 p.m. May 10. Cost: $50 per couple.

-- Smoking cessation, 6:30 p.m. Tuesdays beginning May 13. Call 412-942-2008.

-- Introduction to breast feeding, 7 to 9 p.m. May 14. Cost: $40 per person or $50 per couple.

• The Allegheny County Health Department is sponsoring a food protection certification course from 8:30 a.m. to 4 p.m. May 9 and 8:30 a.m. to 5 p.m. May 16 at the Broughton Volunteer Fire Department, 1030 Cochrans Mill Road, South Park. The cost is $75, $60 for those who live or work in the county. Call 412-687-2243 or 412-578-8044.

• The Southwestern Pennsylvania chapter of the American Red Cross is sponsoring the following safety classes in its Downtown Pittsburgh office, 225 Blvd. of the Allies, unless otherwise indicated. Call 412-263-3106 unless otherwise indicated.

-- Standard first aid with CPR and AED, 8 a.m. to 3:30 p.m. May 10 and 15. Cost: $55.

-- Baby sitting, 8 a.m. to 4:30 p.m. May 10, Fayette County location, 108 Morgantown St. Cost: $40. Call 724-438-2567.

-- CPR, adult and child plus infant CPR, 8 a.m. to 4 p.m. May 13. Cost: $50.

-- First aid, 5:30 to 9:30 p.m. May 13, Fayette County location. Cost: $30. Call 724-438-2567.

• Excela Health is sponsoring the following classes. Call 1-877-771-1234.

-- Childbirth and Beyond, 10 a.m. to 3:30 p.m. May 10 and 11, Memorial Conference Center, Westmoreland Hospital.

-- Sibling class, for older children ages 2 to 7 of expectant mothers, 10 to 11:30 a.m. May 10, South Conference Room, First Floor, Latrobe Hospital.

-- Car seat safety parenting, 7 to 8 p.m. May 12, Auditorium A, Latrobe Hospital and May 14, Memorial Conference Center, Westmoreland Hospital.

-- Heart School, for those who have had a heart attack or bypass surgery, 8:45 to 11:45 a.m. May 13, Cardiac Services Conference Room, fourth floor, Latrobe Hospital.

• The Cancer Caring Center, 4117 Liberty Ave., Bloomfield, is hosting a workshop, "Stress Reduction Tips for the Whole Family," from 7 to 9 p.m. May 13 as part of its monthly stress reduction series. To register, call 412-622-1212.

• The ParentWISE program of Family Services of Western Pennsylvania, Suite 1, 211 Huff Ave., South Greensburg, is hosting a workshop on children's and teens' social networking from 9 a.m. to 4 p.m. May 14. The cost is $75, which includes lunch. To register, call 724-837-5410 ext. 703.

• The Arc of Westmoreland, 316 Donohoe Road, Hempfield, is hosting a crisis prevention and intervention workshop for parents, guardians and families from 6 to 8 p.m. May 14. For reservations, call 724-837-8159 ext. 164.

• The Department of Medicine at the University of Pittsburgh is sponsoring the following research studies:

-- Smoking harm reduction. Needed are smokers 18 and older interested in cutting back on cigarette usage. Call 412-383-1222.

-- Biofeedback treatment for urinary incontinence. Subjects should be women age 60 and older who have bladder control problems. Call 412-647-1271 or 412-647-1272.

• Participants in Allegheny and Washington counties are being sought by the Center for Oral Health Research in Appalachia, a joint project of the University of Pittsburgh and West Virginia University, for a study that offers free dental screening at Cornerstone Care, 1227 Smith Township State Road, near Burgettstown. Call 724-947-9466 or 1-800-778-9194.

• Self Help Group Network, a service of HelpLine, provides a database of support groups. Call: 412-255-1155.

• Excela Health is sponsoring a stroke education and support group meeting for patients and caregivers from 10 a.m. to noon May 10 in the south conference room on the first floor of Latrobe Hospital. Call 1-877-771-1234.

• The Good Grief Center for Bereavement Support is offering training for volunteers from 5:30 to 8:30 p.m. May 15, 19 and 21 at the Jewish Community Center, 5738 Forbes Ave., Squirrel Hill. Registration is required, and volunteers must meet with staff beforehand. Call 412-461-1776 or 1-888-474-3388.

• The Board of Auxiliaries of UPMC Passavant is holding a Victorian Tea and fashion show of clothing popular from the 1980s through the 1920s from 1 to 3 p.m. May 17 in Assembly Hall. The cost is $15, and the deadline to buy tickets is May 14. Call 412-364-1814.

• Penn State Extension is sponsoring an anti-tobacco essay contest for children in sixth through eighth grades who live in Westmoreland County. Each essay should contain between 100 and 150 words and typed or neatly written. Entries are due May 19. Call 724-837-1402.

• Amy's Army is sponsoring a virtual bone marrow registry drive through May 19. Those who register are to receive donor testing kits from the National Bone Marrow Registry. For more information, visit http://www.amysarmy.org or call 1-877-243-4269.

• The Three Wishes Program has power wheelchairs available to qualified recipients. Call 1-800-277-2129.