In order to be less scared, I imagine the huge Australian huntsman as a girlie, just chilling and listening to us yap. It sounds dumb, but it worked (a little bit)

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I am someone who believes it is never too late to change. I think you can in fact teach an old dog new tricks, as long as the old dog is open-minded and willing to learn. As long as the old dog is willing to admit when it was wrong, and work to become a better dog.

OK yes, I am the old dog. And the trick I am trying to learn, even though I am decrepit? It is an important one, something I have struggled with, frequently, for my entire life. I have been trying … to become less scared of huntsman spiders. Apologies to all the other spiders that exist; I have to be realistic about my possible growth as a human. It also has to be the huntsman because it is large, in charge, and the one I encounter most often. Including three times in the last week. Inside my home. You can’t see me but I’m shaking my head and grimacing as I type.

Low-cost tech and joined-up funding have reduced illegal logging, mining and poaching in the Darién Gap – it’s a success story that could stop deforestation worldwide

There are no roads through the Darién Gap. This vast impenetrable forest spans the width of the land bridge between South and Central America, but there is almost no way through it: hundreds have lost their lives trying to cross it on foot.

Its size and hostility have shielded it from development for millennia, protecting hundreds of species – from harpy eagles and giant anteaters to jaguars and red-crested tamarins – in one of the most biodiverse places on Earth. But it has also made it incredibly difficult to protect. Looking after 575,000 hectares (1,420,856 acres) of beach, mangrove and rainforest with just 20 rangers often felt impossible, says Segundo Sugasti, the director of Darién national park. Like tropical forests all over the world, it has been steadily shrinking, with at least 15% lost to logging, mining and cattle ranching in two decades.

Government poised to officially protect 200,000 hectares of remote Patagonian coastline and forest

Chile’s government is poised to create the country’s 47th national park, protecting nearly 200,000 hectares (500,000 acres) of pristine wilderness and completing a wildlife corridor stretching 1,700 miles (2,800km) to the southernmost tip of the Americas.

The Cape Froward national park is a wild expanse of wind-torn coastline and forested valleys that harbours unrivalled biodiversity and has played host to millennia of human history.

Seaweed has become a key cash crop as climate change and industrial trawling test the resilient culture of the semi-nomadic Vezo people

Along Madagascar’s south-west coast, the Vezo people, who have fished the Mozambique Channel for countless generations, are defined by a way of life sustained by the sea. Yet climate change and industrial exploitation are pushing this ocean-based culture to its limits.

Coastal villages around Toliara, a city in southern Madagascar, host tens of thousands of the semi-nomadic Vezo people, who make a living from small-scale fishing on the ocean. For centuries, they have launched pirogues, small boats carved from single tree trunks, every day into the turquoise shallows to catch tuna, barracuda and grouper.

A boat near lines of seaweed, which has become a main source of income for Ambatomilo village as warmer seas, bleached reefs and erratic weather accelerate the decline of local fish populations