Faith leaders must collaborate with public and private partners to set an example on combating climate change for the communities they serve, Massachusetts Gov. Maura Healey said while standing in the Vatican Gardens.

A recent summit organized by the Connecting Climate Minds network brought together hundreds of scientists, doctors, community leaders and other experts from dozens of countries who have spent the past year studying how climate change is harming mental health in their regions.

The Kenya Conference of Catholic Bishops has called for "swift action" and "generous acts of charity" to mitigate effects of flooding that has so far left more than 250 people dead and a trail of property damage.