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Delegates from 196 countries are discussing progress in preserving biodiversity. So what are the sticking points?

Caistor St Edmund, Norfolk: Above, the canopy is opening up, letting the light in; below, fungus is beginning to sprout from the dark soil

UN chief Antonio Guterres on Sunday urged "significant investment" in a fund created to safeguard Earth's biodiversity as he addressed delegates to the world's biggest nature protection conference in Cali, Colombia.

As officials from around 200 countries prepare to meet in Colombia for the Cop16 biodiversity summit starting Monday, world-respected British zoologist Jane Goodall said there was little time left to reverse the downward slide. She wants the United Nations meeting to lead to action rather than "words and false promises".

Many sea creatures lead complex, social lives in the wild and are likely to suffer in farmed conditions. But they aren’t mainstays of the aquaculture industry − yet.

There’s a lot we get wrong about our least favorite seabirds

Puffins, Manx shearwaters and kittiwakes on Rathlin Island in Northern Ireland have been dying. Now islanders and experts think they have the solution

Some celebrate them, others despise them. Yet this mimicking, competitive and acrobatic songbird still exerts a powerful fascination

Why have Atlantic salmon populations dropped so dramatically in British rivers, and is fish farming to blame?

Idea that every habitat is replaceable is a misuse of biodiversity net gain, say ecological experts

Letters: Readers respond to an editorial on falling numbers and debate what can be done to help fish and the wider ecosystem