World leaders gathered for a critical climate conference are holding a moment of silence in honor of people killed in recent attacks in Paris, Beirut, Baghdad, Tunisia and Mali.
U.N. Secretary General Ban Ki-moon declared the moment of silence as he launched two weeks of talks in Paris Monday aimed at a long-term deal to slow man-made global warming.
Organizers sought a high-level kickoff to the talks in hopes of providing impetus for a strong agreement. They say 151 world leaders are expected to attend.
Some leaders have visited the sites of the deadly Nov. 13 attacks in Paris. President Barack Obama laid a flower at a concert hall where dozens of people were killed.