Ottawa Citizen: While NASA lost a $285-million satellite this week, a Canadian microsatellite that does the same job is chugging along happily in orbit — at one-1,000th the cost. The 30-centimetre-long University of Toronto satellite is searching for “missing” carbon dioxide — the vast amount of Earth’s main greenhouse gas that somehow vanishes each year. That’s what NASA’s OCO satellite would have done if it had survived launch on Tuesday. The big difference: Canada built and launched its …