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Two gritty teams of hobbyist cavers attempt to break records for the longest and deepest caves in Canada.

From boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, the Amazon's great size hides spectacular secrets.

Priced out of Toronto, young people are looking to put down roots elsewhere. Hamilton is proving to be a place with opportunities and affordable housing.

Hop aboard the fast train from Bergen to Oslo, travelling through the mountains of southern Norway to the famous Flam Railway - voted the most scenic railway in the world numerous times.

The impact of tourism is not all positive in Barcelona, and has compelled locals to find solutions to reclaim their city and make it more livable.

The ancient city of Beirut has endured civil war and bombings, but amidst crumbling buildings, a garbage crisis and frequent blackouts, Beirutis understand that nothing gets done unless you do it yourself.

Residents of the Hebrides are learning how to live side-by-side with their wild neighbours - including a ferryman, an artist and a man who is attempting to turn an island into a nature reserve for bees.

Austria's Transalpin railway crosses the majestic snowy peaks of the Tirol, taking us from the historic city of Graz to the magical winter wonderland of Bludenz.

Ray journeys to the magnificent Isle of Skye in search of Britain's rarest bird of prey, the spectacular sea eagle.

When Hurricane Katrina struck, New Orleans was caught in the eye of the storm. During the ongoing recovery, local artists-turned-activists have joined together to preserve New Orleans' uniqueness.

On the Hebrides' outlying islands, seabirds rush to feed their chicks while avoiding the murderous intentions of "bonxies". On the low-lying Uists, acres of beautiful meadows burst into flowers.

Beginning in the port city of Hualien, this train journey travels north along the rugged Pacific coast to Taipei before heading to the stunning Alishan Forest Railway.

Ray uses the Derwent River as his guide to the breathtaking Borrowdale valley, a place of ancient rainforests and home to some very special wildlife - including peregrine falcons.