Industrial wastelands to wildlife oases: Five nature wins that have actually worked:

World leaders are gathering in Cali, Colombia, to agree ways to save species from extinction and restore nature. Here are five powerful solutions to halt biodiversity loss.

There's a treasure trove of ways to save species in decline, and restore their habitats so they can live safely. In a healthy state, rich and biodiverse habitats can replenish our water, air, soil and reduce the risk of dangerous contagious diseases.

'The sixth great extinction is happening', conservation expert warns

With her signature shawl draped over her shoulders and silver hair pulled back from her face, Jane Goodall exudes serenity - even over our slightly blurry video call.

In a Vienna hotel room, a press team and a small group of filmmakers, who are documenting her latest speaking tour, fuss around her.

A biodiversity summit is where scientists and policy-makers meet for talks on what can be done to preserve biodiversity.

Biodiversity is the variety of all life on Earth - including animals, plants, fungi and micro-organisms like bacteria.

Together they provide the planet with everything necessary for survival, including fresh water, clean air, food and medicine. Biodiversity matters because humans cannot get these benefits from individual species - a rich variety of living things must work together in harmony as part of an ecosystem.

Plants, for example, are very important for improving our physical environment: cleaning the air, limiting rising temperatures and providing protection against climate change.

Alarm call as world's trees slide towards extinction

Scientists assessing dangers posed to the world’s trees have revealed that more than a third of species are facing extinction in the wild.

Glaciers are not easy targets for any type of satellite to measure mass loss over time

Scientists have obtained their best satellite assessment yet of the status of the world's glaciers.

Europe's Cryosat satellite tracked the 200,000 or so glaciers on Earth and found they have lost 2,720bn tonnes of ice in 10 years due to climate change.

That's equivalent to losing 2% of their bulk in a decade.

Monitoring how quickly glaciers are changing is important because millions of people rely on them for water and farming.