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Ukraine's interim president has warned Russia against "military aggression" as armed men seize Crimea's regional parliament. We have the latest from eyewitness reporters. In our weekly look at consumer issues, we look at why Amazon are upping the cost of its fast delivery service - and we find out why one travel company says it has to keep prices higher in school holidays. And we speak to the four year old who wrote to NASA with his space questions - and got a personalised video answer.