As world leaders met last month at the UN General Assembly, a new UN Environment Programme report says the world is on track to pass the 1.5°C threshold. I spoke with Adrienne Marshall, one of scientists and co-authors of the report. Here’s what she says are the challenges for world governments.

As world leaders met last month at the UN General Assembly, a new UN Environment Programme report says the world is on track to pass the 1.5°C threshold. I spoke with Adrienne Marshall, one of scientists and co-authors behind the report. Here’s what she would want world leaders to know.