Find out what innovation means and how it takes place in the green roof industry with Anna Droz from LiveRoof and LiveWall.

Ten years in, the Commissioner and CEO of the Philadelphia Water Department, Randy Hayman, reflects upon the successes and challenges of implementing the multi-billion dollar award winning green infrastructure focused Green City, Clean Waters plan in advance of his keynote address at CitiesAlive on October 16.

Dr. Stephan Brenneisen, the father of green roof and biodiversity research discusses how to design green roofs for biodiversity, green roof policy in Basel Switzerland and his future plans.

Henry Gordon Smith, Roxanne Miller and Antoine Troitter share their unique perspectives on the challenges and opportunities associated with the rapid expansion of the ‘agritecture’ sector.

There is a growing demand for planting exterior green walls in cold climates, but freezing temperatures can take a toll on plants in these systems. Three experts weigh in to share their winter survival secrets: Joep van Vilsteren of Sempergreen; award-winning green roof and wall designer Randy Sharp; and Lucas Moran of green wall manufacturer New Earth Solutions.

Over the past decade, there has been a lot of talk, research, and pilot projects around the concept of "smart cities", integrating technology into our cities. For the most part, nature, the very foundation on which cities are built, has been left out of these discussions. Dr. Nadina Galle shares with us here her pioneering work on a new concept she calls the "Internet of Nature".

We asked two experts, an architect, Lois Vitt Sale, and a scientist, Wolfgang Amelung - How Does One Design for Maximum Climate Mitigation and Adaptation Performance of Living Architecture. Their responses illustrate the complex nature of this fundamentally important question.

We asked four prominent Green Roof Industry leaders representing different aspects of the industry to share their thoughts about adapting to the Covid 19 Pandemic and the future of the industry.

Rooftop farming is still very much in its infancy, yet these farms are already making a unique and multifaceted contribution to the communities they serve. Three outstanding urban farmers from different regions reflect on the social aspects of what they do, in this special 20th Anniversary Edition of On the Roof With…