France's Transport Minister says it is likely "many" French passengers are aboard the missing Air Algerie flight.
Burkina Faso and Algeria are both former French colonies.
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One estimate suggests that higher mortgage repayments could squeeze hard-pressed householders into debt peril.
Calculate your monthly mortgage repayments if interest rates rise.
Fast-melting Arctic sea ice has forced some 35,000 Pacific walruses to retreat to the Alaska shoreline.