Weiskel has published several books and articles including Environmental Decline and Public Policy: Pattern, Trend and Prospect (Pierian Press, 1992), which is based upon his 1988 testimony presented to the United States Senate in support of legislation to limit carbon emissions. His current research concentrates upon belief systems within cultures and how core cultural beliefs can either facilitate change or block change over time.
In 2001, he co-founded The Climate Talks Project along with Professor William Moomaw of the Fletcher School at Tufts University. This group has convened scholars, business leaders, nongovernmental organization activists, journalists, and concerned citizens to discuss effective means of mobilizing civil society to respond to the evolving global climate crisis. Currently he is the Research Director at the Cambridge Climate Research Associates.