Here is the lineup:
• Energy efficiency when the household is asleep is the topic for Tuesday, March 13, at 7 p.m. in the Community Hall. LEDs glowing in the night often mean needless energy use. Elton Sherwin, author of "Addicted to Energy," explains how to reduce plug-in load for significant monthly savings.
• Outside near the library at 2 p.m. on Thursday, March 15, the town will officially inaugurate two recharging stations, each able to recharge two electric vehicles at a time.
• Broom, an invasive plant, is the subject of the annual "broom pull" starting at 9 a.m. on Saturday, March 17, at the Historic Schoolhouse.
• A kids workshop on making art from trash — Fantastic Trash — comes to the library at 4:30 p.m. Thursday, March 29, from the Museum of Craft and Folk Art in San Francisco.
• A gardeners workshop by Deva Luna on the wise use of water and native plants happens at 10 a.m. on Saturday, March 31, in the Community Hall. Registration required.
• The uses of beneficial insects, including pest control and keeping bees in the backyard, is the subject of a presentation at 7 p.m. on Tuesday, April 10, in the Community Hall.
• Earth Day celebrations begin at 10 a.m. on Saturday, April 28, at the Town Center. A hike leaves from Triangle Park at the corner of Portola and Alpine roads at 2 p.m.
Go to www.portolavalley.net for more information.