As cities expand, demand for land continues to grow. But that same land provides vital services to humans, such as agriculture. Nature and urbanisation are two sides of the same coin. Can they ever be reconciled? Or is urban sprawl inevitable? The Down to Earth team takes a closer look at the situation in France.

They produce twice as much oxygen in the Mediterranean as the Amazon rainforest. They are often confused with algae. But seagrasses, known as "posidonia" in the Mediterranean, are plants that are crucial to our planet. Yet they are under threat. Scientists believe the Mediterranean has lost 14 percent of its seagrass meadows over the past 100 years. Tourism, boats dragging their anchors and pollution have driven the rapid decline of this ancient, carbon-absorbing plant.

The healthcare sector accounts for around 4 percent of global greenhouse gas emissions. That's equivalent to the annual emissions of France, Germany and Brazil combined. Medical staff and the healthcare industry are gradually embracing the objective of reducing the sector's contribution to global warming. But the task remains daunting. The Down to Earth team takes a closer look.

Dry rivers, thirsty villages and depleted groundwater reserves: as water supply grows ever more uncertain, France is gearing up for another dry summer. But the country has a game plan for survival: share, reuse and save a dwindling resource. The Down to Earth team takes a closer look.

Swimming in the Seine has long been forbidden but taking a dip in the iconic river could soon become a reality. Just in time for the 2024 Summer Olympics, Paris has embarked on its most ambitious bid yet to clean up one the world’s busiest waterways.

With microplastic pollution invading our oceans and the soil, few places have been spared. Could it also enter the food chain? Scientists in the Netherlands are beginning to uncover the tip of the iceberg – so far, with more questions than answers.

It could almost be the scene of a picture postcard: old boats dotted around the French coastline, moving with the tide. But their environmental impact is a lot less charming. Most boats are made of fibreglass, plastics and resins, making them difficult to recycle. But is there another way? Can sustainable boating set sail? We take a closer look in this edition of Down to Earth.

They can be found on raincoats, non-stick pans and plastic packaging. In the last 50 years, PFAS – short for per- and polyfluoroalkyl substances – have made their way into many of our everyday objects. Dubbed "forever chemicals", they're extremely persistent and can stay in the air, water and soil for decades, harming the environment and ultimately our health. Is PFAS pollution irreversible? And what can we do to protect ourselves? We take a closer look in the edition of Down to Earth.

It has ravaged farms, decimated wild birds and spilled onto mammals. Could avian flu spark the next human pandemic? The Down to Earth team takes a closer look.

Billions of tiny plastic beads, known as nurdles, have been washing up on beaches in the north of Spain and along France’s Atlantic coast. This is the result of industrial pollution on a massive scale. To understand how this form of pollution has gone undetected for so long, the Down to Earth team traveled to Tarragona, Spain, where massive nurdle spills have been reported.