7 stories of optimism this week (9.12.25-15.12.25)

Wondering what went right this week in the conservation world? We’ve got you covered with our Conservation Optimism Round-Up! We are collating stories of optimism from around the globe so that you never miss your dose of weekly motivation. (Featured image credit: Eurasian otter by Dave Pape via Wikimedia Commons)

1. Economic growth no longer linked to carbon emissions in most of the world, study finds

Last Friday was the 10th anniversary of the Paris Agreement, the landmark treaty setting out nations’ legal obligations to act in response to the climate crisis — and a recent study has underlined its effectiveness in cutting global emissions. The Energy and Climate Intelligence Unit (ECIU) reported last week that countries representing 92% of the global economy decoupled have consumption-based carbon emissions and GDP expansion, reversing the trend that drove the expansion of fossil fuels over the past century.

Countries including Brazil, Colombia, and Egypt have expanded economies while cutting emissions, while emissions in China have plateaued over the past 18 months — suggesting they may have already peaked. Many analysts hope that slowing emissions mean the global peak is in sight, which would give hope for keeping global heating to between 1.5C and 2C in order to avoid the worst impacts of climate change.

John Lang, the author of the ECIU report, said: “I’m definitely encouraged. Looking back shows how much progress we have made over the past 10 years. The world is now in a pre-conditioning stage ahead of structural decline. We are approaching a historic point when emissions start to go down. That is super exciting.”

2. Solar-lights protect sea turtles from fishing nets, Mexico trials show

In Mexico’s Gulf of California, a region with some of the highest reported rates of sea turtle bycatch, researchers from the US and fishers have worked to reduce bycatch by 63% using solar-powered lights attached to fishing nets.

Scientists and fishers were working to find alternatives to current methods of reducing bycatch, which used expensive disposable batteries or chemical sticks that produced more waste. “It’s a win-win,” Jesse Senko, lead author and assistant research professor at Arizona State University’s School of Ocean Futures, said in a statement. “You get a light that lasts significantly longer without the need for disposable batteries, and you also get a proven reduction in bycatch, one of the greatest threats to sea turtles worldwide.”

“Sea turtles play an irreplaceable role in marine ecosystems,” Senko said. “They help maintain the health of seagrass beds and coral reefs. Protecting them isn’t just about saving an iconic species. It’s about ensuring the long-term resilience of our oceans.”

3. Rewilding is revitalising lives and landscapes in the Iberian Highlands

Rewilding Spain’s work in the Iberian Highlands shines a light on how conservation can benefit people and nature together in rural areas, demonstrating that rewilding can deliver socio-economic benefits as well as ecological ones. From launching a resin-tapping school to revive traditional skills and prevent forest clearing, to reintroducing a herd of Przewalski’s horses that is supporting local businesses through tourism, rewilding is breathing new life into the landscape.

“For decades, people have left the Iberian Highlands looking for better opportunities elsewhere, which is why this area is part of the so-called ‘Empty Spain’. But most residents want to keep living in town and villages here — it’s just a question of how they do that and what they get in return. By using nature recovery as an engine that drives economic growth, rewilding is giving more and more people the means to stay, and also a reason for new people to settle here.”

4. Reforestation and wild pig decline spark surge in miniature deer in Singapore

Greater mouse-deer are rare, rabbit-sized ungulates with important roles in seed dispersal — and had not been seen in Singapore for 80 years. But after two decades of forest rehabilitation, the population on Palau Ubin has bounced back faster than anyone expected, with population densities three times higher than anywhere else in the world.

While the population boost was facilitated by a steep decline in the competing wild pig population on the island reserve, their recovery was dependent on the prime forest habitat that had been restored on the island. The quarries, plantations, and aquaculture ponds that covered the island in the 1990s were converted to wetlands, forests, and mangroves by the National Parks Board of Singapore — facilitating what one scientist called the most dramatic” case she’s ever seen of a sharp drop in one species correlating with an explosive rise in another.

For Marcus Chua, a researcher documenting the recovery, ‘the remarkable recovery of the tiny deer on Pulau Ubin is reassuring proof that habitat restoration is a conservation strategy that pays off in the end. “Such efforts can build resilience and facilitate species recovery,” he said, “even in heavily modified habitats.”’

5. Hightailing along city streets and raiding ponds: otters’ revival in Britain

Twenty years ago, otters were rarely seen anywhere in the UK — but are now found in almost every river and watercourse in the country. A survey in the 1970s found otters in just 6% of the 3000 sites surveyed, largely due to the dumping of industrial waste in rivers in the 19th and 20th centuries, but bans on pollutants, improving water quality, and a targeted reintroduction campaign have helped them bounce back.

“It has been a slow burn. Otters typically have one, two, sometimes three youngsters that the female looks after for a year, so it’s a slow recolonisation rate. Over 10 years, you might just have five or six kits, so it was always going to take a bit of time. But now it has passed a tipping point.”

While there are still concerns about contamination by pollutants and heavy metals in rivers, otters are proving to be a good way to monitor the health of waterways, and conservationists hope that they could become a symbol for change. “If we can use otters as a sort of charismatic ambassador for river health, that can be really quite a powerful thing.”

6. Choosing coexistence over conflict: How some California ranchers are adapting to wolves

Wolf numbers are expanding in California in a huge conservation success — but this increasingly puts them in conflict with cattle ranchers, who are finding new ways to live with the predators.

Some farmers are returning to older ranching practices to reduce threats from wolves, such as hiring range riders to monitor and travel with the herd on horseback, scaring off wolves who perceive humans as super predators. Long term deterrents have been the most effective, such as training cattle using dogs to face predators instead of running away — interrupting the chase sequence to prevent attacks. This approach has meant one rancher, Mark Coats, lost just two cattle to predators since 2014, and he is now teaching it to others.

‘“We may not like a group of cows getting killed by lightning, but we can’t do anything about it,” said Coats, but with wolves, ranchers can mitigate their risks and reduce their losses. “If you make the effort, the reward far outweighs the cost.”’