Soaring temperatures, but no air con? How about using thermal energy from wastewater? DW speaks to energy expert Nick Meeten, Director of Applied Energy based in New Zealand at the Resilient Cities conference in Bonn, Germany, organized by ICLEI — Local Governments for Sustainability. It's where cities present best practice solutions for a sustainable future.

Some two years ago, Portugal battled two massive forest fires. Over 60 people died in the flames and at least 200 more were injured. Portugal said "never again" and stepped up fire prevention — slapping on huge fines for those who don't look after the forests. They also found some unlikely helpers: goats. Marc Dugge went to find out more and his report is presented by Holly Young.

A vast network of pipes beneath the streets of Paris provides cooling to office buildings, department stores and even the famous Louvre! Sabine Wachs went to check it out, and her report is presented by Ineke Mules.

Tomas Diagne has spent the past 25 years working to protect not only turtles, but their cousins the terrapin and the tortoise, which are collectively known as chelonians. His home in Senegal doubles as the African Chelonian Institute. Here they research, breed, and reintroduce turtles, tortoises, and terrapins into the wild.

220 kilos — that’s how much packaging waste a German citizen produces each year according to the German Environment Ministry. It's more than the European average, which is 167 kilos per person. Increasing amounts of German waste are being exported to Turkey. But Turkey is one of the countries most responsible for polluting the Mediterranean, according to a report from the World Wildlife Fund.

It takes a certain kind of species to not only survive, but thrive in the dark, thousands of meters below the surface of the water. At hot-water vents around the world, creatures live off the chemical energy that flows from underground volcanic activity. Such places are a paradise for biologists striving to understand evolution and discover new species.

In India, fishermen's wives are successfully challenging age-old traditions of patriarchy and gender stereotypes. Instead of waiting for their husbands to bring home fish, they've taken the oars into their own hands. They've become tourist guides and mangrove experts, earning their own living while helping to save the biodiversity of their environment.

Crickets and cicadas are known for their summer songs, but it turns out other insects are playing whole symphonies that humans can't hear. In the United States, a biologist and an artist have teamed up to record, amplify and make music with the secret songs of insects.

The Bristol Pound, launched back in 2012, has become the UK's largest local currency. It was thought up by members of the local Green Party, worried about the proliferation of chain stores in their city. The idea was to promote community life and small, independent, green businesses. So how does it work and how efficient is it?

No fresh sardines caught off the Atlantic coast are sold between October and May in the markets of the Portuguese capital, Lisbon. As another no-catch period ends, we look at why this beloved fish is at the center of a dispute between fishermen, scientists and government officials in the Iberian peninsula.