In two days of frank discussions behind closed doors, a group of 50 engineers, former astronauts, scientists and former NASA executives concluded that the United States should explore Mars, but needs to rethink how and when to get there.
The death rate in Bulgaria is minus 60,000 people a year, another 70,000 emigrate, which accounts for the annual population loss of 130,000 people, or 365 people a day, or for 15 people per hour.
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