C40 Cities Climate Leadership Group.

No events began in the chosen period. Widen it, or reset.

• Copenhagen Structural
  Barack Obama attended a 2009 climate conference where India was also participating.
  Moves C40 Cities Climate Leadership Group

  02:55
• Barcelona Operational
  A man from the Netherlands was reported to be in Barcelona, near Cabrera de Mar.
  Moves C40 Cities Climate Leadership Group

  12:07
• Berlin Operational
  Germany plans massive spending on infrastructure.
  Moves C40 Cities Climate Leadership Group

  08:25
• Boston Operational
  Skanska is contracted for the Boston Logan Airport project, while Suffolk is the dominant general contractor in Boston projects.
  Moves C40 Cities Climate Leadership Group

  16:46
• Basel Shared context
  WuXi Biologics hosted its annual CRDMO+ Day in Basel on October 19, 2026.
  Moves C40 Cities Climate Leadership Group

  07:55
• Chicago Mentioned together
  Jim Doyle secured federal funds to expand Amtrak service, aiming to connect the state capital to Chicago via high-speed rail.
  Moves C40 Cities Climate Leadership Group

  17:03

• Copenhagen Structural

  Copenhagen functions as a member city within the C40 Cities Climate Leadership Group.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Copenhagen

  Copenhagen → C40 Cities Climate Leadership Group
• Barcelona Operational

  Barcelona functions as a member city within the C40 Cities Climate Leadership Group.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Barcelona

  Barcelona → C40 Cities Climate Leadership Group
• Berlin Operational

  Berlin is formally identified as a member city of the C40 Cities Climate Leadership Group.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Berlin

  Berlin → C40 Cities Climate Leadership Group
• Basel Shared context

  Basel is recognized as one of the participating cities within the C40 Cities Climate Leadership Group initiative.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Basel

  Basel → C40 Cities Climate Leadership Group
• Chicago Mentioned together

  Chicago is identified as a member city within the C40 Cities Climate Leadership Group.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Chicago

  Chicago → C40 Cities Climate Leadership Group
• Heidelberg Operational

  Heidelberg is a member city participating in the C40 Cities Climate Leadership Group network.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Heidelberg

  Heidelberg → C40 Cities Climate Leadership Group
• Boston Operational

  Boston is a member city participating in the C40 Cities Climate Leadership Group network.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Boston

  Boston → C40 Cities Climate Leadership Group
• Heidelberg Mentioned together

  No direct evidence linking C40 Cities Climate Leadership Group and Heidelberg was found in the provided timeline.

  Some supportAug 30
  C40 Cities Climate Leadership Group → Heidelberg

  Heidelberg → C40 Cities Climate Leadership Group