In the province of Alberta are three major oil sands areas: the Athabasca (the largest), Peace River, and Cold Lake.

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After lunch in Muskegon I launch to the north, getting to 6, 000 feet, and listen carefully to the 180hp engine before heading west over cold, lonely Lake Michigan.

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Freshwater fish from cold waters, like lake herring, lake trout, salmon, and whitefish, are also high in omega-3s.

CNN: How to buy the best fish

Round midnight antique trucks arrived to carry the revellers home to outlying encampments, their headlights dancing away into the darkness while I made my way back to my cold yurt past the lake brimming with moonlight.

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As night fell, it was invigorating to see all the rosy-cheeked folks fresh from playing outside, but Lake Placid is cold.

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After our fresh lunch of trout, roasted onions and pineapple, we took a short hike, using hip waders to walk into the cold stream that emptied the lake.

BBC: Kluane, Canada (Credit: Parks Canada/Fritz Mueller)

In March, the duchess braved the cold snowy weather to visit a scout camp in the Lake District where she helped out at an activity centre.

BBC: Duchess of Cambridge awards scouting honours

Ice palaces have been a winter feature of Saranac Lake since 1898, fitting for a quaint mountain village where winter temperatures can plunge to minus 30 during cold snaps.

WSJ: NY inmates help build ice palace in Adirondacks