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grzegorz.net5月8日 Home made space shuttleOK, it's not made at home and it can't fly to an orbit but it's low cost and it really flies. It crashes at the end but still it's amazing.
2月20日 Myths about the developing worldWith the drama and urgency of a sportscaster, swedish professor Hans Rosling debunks a few myths about the "developing" world.
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