Children entering second through sixth grade can attend GlaxoSmithKline's Science in the Summer, a free, experiment-oriented program taught at local libraries.

More than 140 libraries in Bucks, Chester, Delaware, Montgomery and Philadelphia Counties are participating.

Courses, which vary from county to county, include topics such as physical science and oceanography. Lessons will be taught in four 45-minute to 60-minute classes by certified teachers, with up to 15 students in each class.

The program runs from late June to the beginning of August. Registration starts in May.

For registration information, visit www.scienceinthesummer.com or a local library.

The Wallingford-Swarthmore School District will host its 5th Annual American Cancer Society Relay For Life from 3 p.m. Friday until 3 p.m. Saturday.

Last year, 77 teams participated, and the relay raised $130,000, the most funds of any Relay For Life event in Delaware County, and of any youth-run Relay For Life in the entire United States.

This year, over 100 teams have registered for the 24-hour event, in which teams of 8 to 15 people will set up a campsite and take turns walking the track relay-style to raise money and demonstrate their commitment to the fight against cancer. The relay includes a Survivor Celebration, Caregiver Recognition, Luminaria Ceremony and entertainment.

The event takes place at George King Field at Strath Haven High School, 205 South Providence Road in Wallingford.

The activities are free and open to the public, until 11 p.m. on Friday and beginning 7 a.m. on Saturday.

Adults can register until Tuesday , on the Web site, www.acsevents.org/relay/pa/haven or by calling Noel Kirkner of the American Cancer Society at 610-692-9831 x. 109.

For more information, contact Kirkner or Strath Haven High School teacher Lydia Holt at 609-240-9189 or at lholt@wssd.org.

For the 14th year in a row, Penncrest High School won the Delaware County Envirothon, a competition that tests students' knowledge on environmental science topics, such as wildlife, forestry, aquatics and alternative energy.

The event, now in its 15th year, took place at Ridley Creek State Park on April 24.

Penncrest seniors Emily Moberg, Vic Jamney, Robby Graham, Teresa Slifer and junior Natalie Scherer, along with advisers Mark Samilenko and Chrissa Kuntz will advance to the Pennsylvania Envirothon at Penn State University on May 21 and 22.

Penncrest has won the state competition for the last three years, Samilenko said. Last year, Penncrest placed second in the Canon Envirothon at the University of Manitoba in Winnipeg, Canada, where teams from 44 states and eight provinces participated.

Springton Lake Middle School will host the Tour D'Health Community Health Fair on May 23 from 4 to 7 p.m. at 1900 North Providence Road in Upper Providence.

The event will include free health screenings, massages, individualized nutrition plans, as well as information about healthy skin-care and actual age versus chronological age.

The event is free and open to the public. Dinner will be available starting at 5 p.m. and costs $4 per person. Dinner reservations must be made by May 14. For more information, call 610-627-6619 or visit the district's Web site www.rtmsd.org and click on "Springton Lake" from the school list.

Ridley High School became the first school to send two teams to the Delaware County Mock Trial playoffs in March, said the group's adviser, Christopher Seymore.

Since October, students had prepped as both the prosecution and defense for the case that dealt with a high school student allegedly harassing and bullying another via e-mail, Internet chat rooms and Web pages.

Ridley, one of three area schools with two teams, went undefeated during the regular season. This was the fourth year that state rules allowed for more than one team to enter from the same school, Seymore said.

Ridley's White team defeated Merion Mercy Academy in the semifinals, held at the Delaware County Court of Common Pleas in Media. In the finals, the White team lost to Notre Dame Academy, which had defeated Ridley's Green team the day before.

For the White team, juniors and seniors Jim Kellett, Shane Radick, Andrew Shaner, Allie Hilferty, Yewande Alade, Victor Poiesz, and Alison Gutsche participated as attorneys or witnesses.
- Ed Mahon and Bonnie Cook