Tunisia’s Dghoumes National park

If you are ever in Nairobi, the one place most people will tell you to visit is the Nairobi National Park. But the ecosystem of this natural heritage seems to be under threat as the controversial Standard Gauge railway snakes rights through it.

In Dghoumes National Park in southern Tunisia, conservationists are reintroducing animals which had almost disappeared, like buzzards, gazelles and ostriches to the area after extensive reforestation efforts.

France's Mercantour National Park is a green sanctuary at the heart of the Alps. It's best known for being one of the wildest in France and having one of the most varied landscapes. Its unique location, near the French Riviera, brings Mediterranean touches to these Alpine mountains. This area is also where the wolf returned to France from Italy in 1992. We take a closer look at this sanctuary for wildlife.

This Wednesday is International Wetlands Day. Worldwide, wetlands cover 12.1 million km². But more than 30 percent have been lost over the past 50 years, despite them playing a crucial role in mitigating the impact of climate change. One example is the Mangroves National Park in the Democratic Republic of Congo. It's the only marine park in the country and it's home to a wide variety of plants and rare animals, including sea turtles. But the park is increasingly threatened by poaching and illegal logging. The construction of a deep water port in the vicinity has also sparked controversy. Our correspondents report.

The Yellowstone National Park was closed down for the first time since 1988 due to torrential rains, flooding and melting snow. The park was just opening for the summer tourist season.