The deep ocean: plunging to new depths to discover the largest migration on Earth
The deep ocean makes up 95% of Earth, yet only 0.0001% has been explored – the Guardian joined a mission off Bermuda looking deeper than ever before
Marine life
Global fish production approaching sustainable limit, UN warns
Around 90% of the world’s stocks are now fully or overfished and production is set to increase further by 2025, according to report from UN’s food body
Could we set aside half the Earth for nature?
Renowned biologist E.O. Wilson wants to set aside half of the planet as protected areas for nature. But is this possible? And, if so, how would it work?
Limiting catch of one type of fish could help save coral reefs, research finds
Study finds protecting a single type of herbivorous fish could be crucial to the recovery of reefs from damage related to climate change
Tuna and mackerel populations suffer catastrophic 74% decline, research shows
WWF says we risk losing species critical to human food security unless action is taken to halt overfishing and other threats to marine life
How to change the world: Greenpeace and the power of the mindbomb
The director and key figures in an award-winning documentary talk about the early days of the activist group and how shocking images were used for global impact