The next transit of Venus occurs June 5. Astronomers once used the transit of Venus across the sun to come up with the 'astronomical unit' – the distance from Earth to our sun.
Solar eclipse on Sunday will be visible only on Easter Island in the South Pacific.
07/09/2010 01:15 pm
NSA data-collection programs have spawned support and criticism. But in an era when many Americans already know their personal information is being gathered, perhaps being more open about it would help, some say.
Doing Good
What happens when ordinary people decide to pay it forward? Extraordinary change...
David Eads sits among old computer parts waiting to be recycled or refurbished by FreeGeek Chicago volunteers.
David Eads runs FreeGeek Chicago, 'an Apple Store for the rest of us'
FreeGeek Chicago gives volunteers hands-on training in restoring old computers to sell or recycle – while they earn credits toward taking home their own desktop or laptop free of charge.
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