Humans Have Crossed 7 of 9 'Planetary Boundaries' | Earth has breached a critical boundary for ocean acidification, with potentially grim effects for ocean ecosystems and human livelihoods
Humans Have Crossed 7 of 9 'Planetary Boundaries' | Earth has breached a critical boundary for ocean acidification, with potentially grim effects for ocean ecosystems and human livelihoods
www.scientificamerican.com
Humans Just Pushed Earth across Another ‘Planetary Boundary’

Archived copies of the article:
- archive.today
- web.archive.org
- ghostarchive.org — some images broken