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PBS
That Time Oxygen Almost Killed Everything
Oxygen keeps us alive, but did you ever consider how Earth found the right balance? Eons produced this video as part of a larger series that explores when Earth contained very little oxygen and green oceans ruled the planet. Viewers see...
BBC
Bbc Earth: The 25 Biggest Turning Points in Earth's History
From the birth of a planet to the evolution of the human race, interactive details the 25 biggest milestones that shaped Earth's history
BBC
Bbc News: Trouble for British Mars Lander
This site contains the BBC News story on the 2003 European mission to Mars and Britain's race to finish the Beagle 2 lander in time for the trip.
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