Word: till
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...till now, the only people who have figured out how to beat Venezuelan President Hugo Chávez have been kids. Since first winning the presidency in 1998, Chávez had never lost an election until December 2007, when he was stunned in a constitutional referendum that he had hoped would eliminate presidential term limits and greatly expand his socialist project. But his nemesis in that plebiscite wasn't Venezuela's feckless political opposition. It was a broad and unexpected university-student movement that took to the streets, mobilized the victorious "no" vote and flummoxed...
...Battle Joined That hidden power in each of us did not become obvious until 1963, when Canadian researchers Ernest McCulloch and James Till first proved the existence of stem cells, in the blood. These cells possess the ability to divide and create progeny - some of which will eventually expire, others that are self-renewing. The pair irradiated mice, destroying their immune cells. They then injected versatile bone-marrow cells into the animals' spleens and were surprised to see a ball of cells grow from each injection site. Each mass turned out to have emerged from a single stem cell, which...
...pictures of the civil rights movement from Emmett Till to Barack Obama...
...pictures of the civil rights movement from Emmett Till to Barack Obama...
Time and again these men and women struggled and sacrificed and worked till their hands were raw so that we might live a better life. They saw America as bigger than the sum of our individual ambitions; greater than all the differences of birth or wealth or faction...