TIME Staff
Watch Live: The 4th Democratic Presidential Debate
Hillary Clinton and Bernie Sanders square off in South Carolina
How to Build a Mirror for the One of the World's Biggest Telescopes
Bigger mirrors and larger telescopes help capture more photons and better images
Ebola Death Confirmed After West Africa Declared Virus Free
The two-year epidemic has killed 11,000 people
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These Are Wikipedia's Top 15 Moments
The site published its first article on January 15, 2001
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Royal Pains In the Headlines
On Jan. 11 Princess Cristina of Spain became the first member of the country's royal family to go on...
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