Environment

Former mayor of Austin Will Wynn will speak at the first of a four-part series: "Business Case for Sustainability." Hosted by Earth NT. Cost: $20. Contact: b.oquinn@urbanstrategiestx.com.

Learn about rainwater harvesting and build your own rain barrel.
All supplies provided by AgriLife Extension. $50/per barrel. Register: https://events.r20.constantcontact.com/register/eventReg?oeidk=a07e6rsr…

Learn to maintain a healthy lawn with less frequent watering. Discover the most effective and earth-friendly ways to care for your yard. Instructor: Gail Donaldson, a turf and irrigation specialist and water conservation manager for the city of Allen. Attendees can enter a drawing for free bags of Green Sense organic fertilizer from Rohde’s Nursery and Nature Store. Space is limited, pre-registration is advised.

Learn about local birds, the importance of preserving their habitat and how to make your backyard wildlife friendly. Free.

Come together to be Napikween (as one). Pray for All those here, those gone, the critters and all of Creators' goodness. Free. RSVP by Jan 23: 214-288-9935. PrayerWalker07@hotmail.com.

Citizens Climate Lobby meets the first Saturday of every month for education on climate change and to plan action items. This month's guest speaker is Robb Willer, associate professor of sociology at UC Berkeley, who will discuss "The Moral Roots of Environmental Attitudes." Email texas@citizensclimatelobby.org for location.

Hike the 160-acre Tandy Hills Natural Area, border to border. Hosted by Friends of Tandy Hills.

Prairie & Timbers Audubon Society conducts this guided bird walk thru the Heard Sanctuary. The walk, which lasts 1.5 hours, begins promptly. Free with regular admission: $11/adults, $8/children.

Learn about the Hagerman National Wildlife Refuge in Sherman, also what Texans can do to stop the inhumane practice of shark finning. Free.

Event aims to connect children and families with nature through fun, age-appropriate activities. Free.