Tonight in San Diego, the newly-formed Eco-Investment Club will hold a "Greenmeet" at the Hotel Solamar (downtown). International real estate investment strategist Gary H. London, of the London Group, will be speaking about his recently-published article “Green Economics as Applied to Development." Gary will be joined by Kyle Cross and Ruben Robles of Destino Real Estate; they will speak on "Wholesaling Green Propeties."

Tickets for the event are $25 for the general public, and $10 for club members — details and ticketing information are available at the Club's website. We're especially pleased to announce this event, as Eco-Investment Club founder Yeves Perez will soon be joining the Green Options writing team!

On the other coast, in New York City, Tomorrow Unlimited will present Jennifer Leonard, a designer and writer who co-authored Massive Change, and Sarah Rich, a solutions-based journalist who co-authored Worldchanging: A Users Guide to the 21st Century in a discussion entitled "Sustaining Change." Jennifer and Sarah will explore ideas about making the ideas of sustainability sustainable themselves for the long haul. They’ll also discuss ways their own thinking on sustainability has changed since completing their respective projects. In doing so, they’ll ask questions about the role of innovative design and technology in our global future, confront the trendiness of contemporary environmental thinking, and consider the importance of change itself for the long-term viability of the sustainable movement.

The discussion will take place at 12:30 pm on Saturday, and is just one part of Tomorrow Unlimited's Creators Series this weekend. Tickets to "Sustaining Change" are $10; an all-access VIP pass to all of the weekend's events is $50.

Our own Amy Stodghill won tickets to the "Sustaining Change" discussion, and will be reporting back on what she saw early next week.

Enjoy your weekend!

Atlanta: Arms Around Atlanta sounds like a blast. It's all going down at Grant Park on Saturday & Sunday.

Boston: Clean Up the Charles on Saturday, April 21!

Chicago: Check out Green Festival happening all weekend long! Green vendors & organizations galore!

Dallas: Run, don't walk to downtown today for EarthFest from 10am - 2pm.

Denver: Visit the Denver Museum of Nature & Science and enjoy yourself at their Earth Day Renewable Energy Expo April 21-22.

Houston: The Houston Zoo is celebrating Earth Day all weekend - family fun.

Los Angeles: Lots to choose from. Clean Rivers, go to a Conscious Living Fair, or Let Worms Eat Your Garbage!

Miami: Check out EarthFest:WaterFest Gone Green a full day of music, eco-village, food, and fun. (Organized by yours truly.)

New York: Choose from a variety of events, and don't forget the slideshow in Grand Central!

San Francisco: Get on over to East Bay on Saturday and have fun at the Berkeley Earth Day Festival.

Seattle: Do a little Earth Day tour and check out several events this weekend in Seattle.

Washington, D.C.: Go to GreenDC Week Earth Day Celebration or check out some other events.

I didn't mention your city? Search for local events at Earth Day Network or EnviroLink.

Rather not party it up? Do something green like a beach clean-up or planting a tree.

Activist and founder of Step It Up Bill McKibben (also in blue) spoke to the sea of people before he headed off to DC (via train) for the evening rally there. The crowd cheered as McKibben listed several of the 1300 Step It Up events taking place across the country, more than he ever imagined would come together to send congress a message to reduce emissions 80% by 2050.

Volunteers had stacks of postcards ready for signatures to send off to Washington and at least one congressman was listening - Anthony Wiener who represents the NYC boroughs of Brooklyn and Queens also spoke at the rally.

Sea of People organizers were pleased with the turnout and the fact that the weather cooperated. Participants went all out with very creative blue costumes. There were polar bears, whales, an iceberg, blue flippers and swimming goggles, crowns, tiarras, and lots of face paint. The crowd got some strange looks from tourists waiting in the line for the ferry to see the Statue of Liberty.

Most of the major NYC area media outlets were there (TV, radio and newspapers - it got a small mention in the NY Times) and by the end of the day reports from the Sea of People event and other Step It Up events throughout the US were posted on the Step It Up website, which has called the campaign a success.