This website is no longer actively maintained
Some material and features may be unavailable



2010: The year in medical breakthroughs

A bone marrow transplant for HIV, early warning signs of Alzheimer’s, CT scans for lung cancer prevention and more in the year’s top research developments.


  Inside the mind of cancer: An interview with Sid Mukherjee

After decades of research, there’s a lot that we know about cancer, but what about its personality? Sid Mukherjee’s new “biography of cancer” tells the story of this deadly disease.


Answering your questions about mammograms

By Dr. Emily Senay and Laura LeBlanc Following our segment last week about new studies on the necessity of annual mammograms, Need to Know spoke with experts from Memorial Sloan Kettering, the American Cancer Society, and the National Cancer Institute to answer your questions on the topic. Many of you have asked specific questions about […]


Five things you need to know about mammograms

A new study suggests that mammograms are not as helpful in extending breast cancer survival rates as we think. Correspondent Dr. Emily Senay will tell us what we need to know about the new study, and what the controversy means for health policy.


Babies are polluted at birth, new report says

There are more than 80,000 chemicals on the market today, but only about 200 of them have been tested for safety. That’s because the Environmental Protection Agency can only require safety testing after there is proof that a substance poses a health risk under the Toxic Substances Control Act of 1976 — the only major […]

      American Voices
      The Watch List
      climate desk