The Arnold Arboretum's sesquicentennial Director's Series traces the Arnold’s significance in the landscape architecture movement, value for the people of Boston, and leadership in creating global connections between plants and people.

Panelists include:

• Dr. Michelle Kondo, Research Social Scientist, UDSA-Forest Service

• Rev. Mariama White-Hammond, Chief of Environment, Energy, and Open Space, City of Boston

• Laurence Cotton, Consulting Producer, “Frederick Law Olmsted: Designing...

Todd Rogers is a behavioral scientist and professor of public policy at the Harvard Kennedy School. Using his two decades of work in behavioral policy as a base, he will discuss his current research into what leads to welfare-enhancing innovations and practices. In particular, he aims to help scholars and practitioners design, identify, and invest in innovations that are likely to successfully scale.

This event is free and open to the public. 

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Learn about seed biology, embryo dormancy, and factors present in woody plant seeds. The class will focus on seed storage and various treatment techniques, including over-wintering and aftercare. Appropriate for those who have succeeded at growing some plants from seed and are ready for greater challenges. Post-class nurturing will be required. Fee $55 members; $68 non-members.

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Sharon Hessney, Writer and Moderator of New York Times Learning Network "What's Going On in This Graph?"

Graphs can go a long way in conveying information that might otherwise take several paragraphs to explain. But it is easy to misread or not fully understand the content and context. In this participatory program, we will decipher several graphs based on data from Arnold Arboretum curators and scientists. We will also look at the data...

Particles in our atmosphere, whether from the natural environment or from human-built engines, affect climate in ways we don’t yet fully understand. MIT Professor Dan Cziczo will speak of particles and clouds in our atmosphere and how climate is influenced by them. The evening will begin outdoors at Fog x Hill, a Fujiko Nakaya fog exhibit at the Arboretum and then shift indoors for a lecture about clouds and climate. Arrive promptly at 6:30pm to view Fog x Hill, a timed-release landscape...