Mark Hertsgaard is the executive director of Covering Climate Now, a global journalism initiative committed to more and better coverage of the climate story. He is also the environment correspondent for The Nation and author of books including HOT: Living Through the Next Fifty Years on Earth.

UN climate report says climate change was "avoidable" but goals of limiting damage are still achievable

The goal of limiting surface temperature rise to 1.5 degrees Celsius is still achievable with net zero greenhouse emissions by 2050