A Nigerian mobile app called Trashcoin connects waste producers to recyclers in real time. Plus it gives users direct incentives like the ability to pay utilities with points gathered from their plastic waste.

A waste recycling initiative in Kenya has permanently changed the Dandora neighborhood, an informal settlement in Nairobi known for its large, unregulated landfills. Several kiosks have been set up where residents can swap recyclable garbage for food. The project has helped clean up the streets in Dandora.

In the French region of Burgundy, home to the city of Dijon, it's not just the grapes that are famous. The region's other star fruit is the blackcurrant. A whole market has emerged based on the cultivation of this small berry. Today, the precious black fruit is transformed in many ways. Its best-known use in France is in the production of the famous liqueur known as crème de cassis, but blackcurrant is also used in cooking and even in the cosmetics and pharmaceutical industries. We take a closer look.

On a remote island in Breidafjordur Bay off the west coast of Iceland, a thousand-year-old harvest takes place -- the hunt for elusive eiderdown, used to make some of the world's best duvets and quilts.

Roger Federer is auctioning t-shirts, racquets, and shoes from his trophy-laden tennis career after delving into the vast memorabilia archive stored up for years by his wife and family. The sports legend is hoping to raise £1 million ($1.4 million, 1.15 million euros) for the Roger Federer Foundation, which supports educational projects in southern Africa and his native Switzerland.

In Grödig, a village near Salzburg, Austria, Walter Grüll breeds the extremely rare albino sturgeon, whose caviar will soon be shipped around the world at incredible cost on New Year's Eve. "It's even softer, even more melt-in-the-mouth than the traditionally black one," he says, washing his harvest before salting it and dividing it into different boxes, worth a total of about 8,000 euros.

Youssef Abdelkarim's storefront on one of Baghdad's most historic streets is a time capsule - literally. Thousands of wristwatches fill the tiny shop, where three generations have repaired Iraq's oldest timepieces. The dusty display window on Rasheed Street features a single row of classic watches in their felt boxes right at the front, with a mountain of haphazardly piled pieces behind it and others hanging from hooks overhead.