It is a misconception to think that cross-country skiing is confined purely to flat terrain.

BBC: Cross-country skiing in Washington��s Methow Valley

It could land big rovers or small, on flat terrain or sloped, in all kinds of weather.

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It also makes certain adjustments on its own, such as when a user switches from flat terrain to an incline.

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On flat terrain, such wax allows the skier to push off and on uphill climbs it prevents him from slipping backwards.

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After disembarking, riders must tow their sleds across several hundred yards of flat terrain until they reach the top of the run.

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Sol 1, as the days are known on Mars, was a busy time for the three-legged lander, which set down Sunday in relatively flat terrain cut by polygon-shaped fissures.

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With its flat terrain and long vistas, exploring the Hamptons by bicycle can be an good way to peek behind the gates and in-between the hedgerows of the mega-mansions on Lily Pond Lane in East Hampton or Ocean Road in Bridgehampton, or to explore the long boulevards interspersed with charming shops and restaurants.

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Those who sell ski merchandise internationally covet China as the one growth market in an otherwise flat business terrain.

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The mariner uses a 250 watt free-spinning motor mounted in the front wheel for propulsion and high capacity 36 volt 9 amp hour advanced lithium battery (LiFEPO4) which provide a smooth, powered ride on flat and hilly terrain.

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Wheels work well on flat surfaces, but are much less efficient on uneven terrain.

ECONOMIST: REPORTS