auckland. detectives say they want to trace a toyota corolla which was hired last week. a 26—year—old man is due to appear in court on monday charged with her murder. president trump says his chief of staff, john kelly, will leave his post at the end of the month. he told reporters he would decide on general kelly's replacement within the next few days. as chief of staff, he was widely seen as bringing discipline to the white house. there's dismay at the un climate talks after the us, russia, saudi arabia, and kuwait objected to a major scientific report on global warming. the report recommends that carbon emissions be halved over the next 12 years to keep the global rise in temperatures under 1.5 degrees celsius. it is 4:30am on bbc news. it is time for click. this week: can tech save the world? we've got plastic soup, solar islands and recycled cars. planet earth is under attack... ..from us.