"I think our projections are conservative, " says Lanni.

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"This suggests that current model projections may in fact provide a conservative estimate of future Arctic change, and that the summer Arctic sea ice may disappear considerably earlier than IPCC projections, " said NSIDC's Julienne Stroeve who led the study.

CNN: Arctic melt worse than predictions

Councillor Angus Ross, planning chief at the Conservative-led Wokingham council, said its modelling was showing much less traffic than projections from Hampshire residents.

BBC: Arborfield Garrison

The company is notorious for extremely conservative guidance, leaving Wall Street analysts to project just how much it will beat its own projections by and then make their estimates accordingly.

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