Embryo debate All the back and forth about the value of human embryos versus human life can be settled with one question: If you were in a burning building with 1,000 frozen embryos and one human child and could save either the 1,000 embryos or the child, which would it be? Case closed. ...more

December 19, 2009

Life vs. life Vivian Sparkman's letter ("Life for the living," Dec. 13) gave me the creeps. ...more

December 16, 2009

Curtailing warming I agree with Paul Krugman's "An affordable truth" (Other Views, Dec. 8). If we do not do something about global warming, we will not have a global world to worry about. ...more

December 10, 2009

Few issues are likely to generate more emotional opposition than federal funding of stem cell research. Handled wrongly, it could energize conservative opponents and derail Barack Obama's presidency. There is no question that we must move ahead, but caution is key. ...more

November 15, 2008

Scientists have transformed one type of fully developed adult cell directly into another inside a living animal, a startling advance that could lead to cures for a plethora of illnesses and sidestep the political and ethical quagmires that have plagued embryonic stem cell research. ...more

August 28, 2008

There are few things in American politics more irrationally ideological, more fanatically faith-based than the accusation that Republicans are conducting a "war on science." ...more

May 12, 2008

On Tuesday Florida voters will choose their presidential candidate in a winner-take-all primary. ...more

January 27, 2008

Scientists at a California company reported Thursday that they had created the first mature cloned human embryos from single skin cells taken from adults, a significant advance toward the goal of growing personalized stem cells for patients suffering from various diseases. ...more

January 18, 2008