Ocean heat records and seven planetary boundaries breached — how well do you know this week's climate news?

This week's biggest climate stories: planetary boundaries, a super El Niño, and protecting the Amazon. Test your knowledge!

1. According to the Potsdam Institute's annual report, how many of the nine planetary boundaries have been crossed to the greatest extent ever recorded?
2. Which two planetary boundaries actually improved over the last decade?
3. What was the previous record ocean temperature at the center of the Pacific El Niño, before this year's super El Niño broke it?
4. In El Niño classification, above how many degrees of anomaly does it count as a 'super El Niño'?
5. According to NASA Earth Observatory, around when did the dramatic lengthening of the Arctic melt season unexpectedly level off?
6. According to a major Amazon study, what delivered the biggest biodiversity and carbon-storage benefit?
7. In the UN's best realistic scenario, around where might global warming peak after we overshoot the 1.5°C target?