Research finds that some early screening for breast cancer may do more harm than good. But that’s what the numbers say. How will women feel?

Most Americans want reasonable gun safety laws, and in a democracy, the majority is supposed to win. Why isn't it working that way with gun control?

Personal attacks on a speaker, especially about their funding, are a sign that the attacker can't dispute the facts the speaker is presenting. Beware the attacker too.

The Nuclear Regulatory Commission has dropped a study on whether living near a nuclear plant increases the risk of cancer. Criticism of this decision is predictable, but unwarranted. The study would only have found what other research has shown. There is no link

Twenty-one strangers with different values and views, thrown together on a Grand Canyon rafting trip, managed to set aside those differences and build community.

The shooting of two charismatic animals stirred international outrage. But a more important event to the developing world concern with animal welfare was publication of Carl Safina's Beyond Words, What Animals Think and Feel.

"30 years after, Hiroshima and Nagasaki are bustling cities. 30 years after Chernobyl, abandoned city. What's the difference?"