WASHINGTON (AP) — A manager in the U.N. Climate Change secretariat who helped write a new report on the subject, said the grueling work by the volunteer authors was “like a dentist’s appointment for six days” and left her with both concerns and hopes that people will unite and respond to the threats of climate change. Koko Warner told the AP on Thursday that: “I’ve lost a lot of sleep about what the science is saying. As a person, it’s pretty scary. We need to act urgently.”