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‘Silent Spring’ author Rachel Carson testifies before a Senate Government Operations Subcommittee in Washington, D.C. on June 4, 1963. Carson urged Congress to curb the sale of chemical pesticides and aerial spraying. AP

Would Rachel Carson eat organic?

Did Rachel Carson catalyze the organic farming movement, as many advocates claim? Or would she reject their ban on synthetic fertilizer and see organic as an inefficient way to feed the world?
Photos and history of Holocaust victims frame the ceiling of the Hall of Names at Yad Vashem, the Holocaust Museum in Jerusalem. White House photo by Chris Greenberg

Why we need to rethink how to teach the Holocaust

Foundational to the work of Holocaust educators and many teachers have been the survivors. Given there are fewer survivors who are alive today, how do educators inform future generations?
HIV becomes dormant in the body and can hide in brain cells. Joseph Lebowitz, Dr. Min Lin, and Dr. Habibeh Khoshboue

HIV lies dormant in brain, increasing risk of dementia, but how?

While drugs have been developed to treat HIV and AIDS, the virus can still lie dormant in the brain, increasing the risk for brain disease such as Parkinson’s and Alzheimer’s diseases.
Russian President Vladimir Putin holds a Cabinet meeting in Moscow’s Kremlin. AP/Mikhail Klimentyev/Sputnik

Russia, Putin lead the way in exploiting democracy’s lost promise

Vladimir Putin’s recent re-election was bad news for democracy in Russia. And it’s a major loss in the struggle for liberalism, as anti-democratic leaders are assuming power across the globe.
A blood test can reveal whether the level of a protein produced by prostate cells is elevated. Ontakrai/Shutterstock.com

Prostate cancer screening: An expert explains why new guidelines were needed

Prostate cancer is the second deadliest cancer among men, but not all types of the disease are as deadly as others. That has led to confusion over screening. An expert explains why new guidelines make sense.