Secretary of State Dean Rusk, President Lyndon Johnson and Secretary of Defense Robert McNamara.
Yoichi Robert Okamoto/Wikipedia
Was Vietnam 'a quagmire' or a 'stalemate machine'? Understanding this 50-year-old debate can shed light on why the US is currently locked into a 'forever war.'
Manhattan on Sept. 11, 2001.
AP Photo/Daniel Hulshizer
An unprecedented onslaught from the US hasn't destroyed the terrorist organization. What is the secret of its resilience?
A photograph of Penn Station’s interior from the 1930s.
We asked five architecture experts to name one building or structure they wish had been preserved, but couldn't resist the tides of decay, development and discrimination.
Trucks cross the friendship bridge connecting China and North Korea on Sept. 4, 2017. Trump has threatened to cut off trade with countries that deal with North Korea.
AP Photo/Helene Franchineau
The international community has been trying to stop North Korea from developing long-range missiles for decades. So what went wrong?
A man sporting a Nazi tattoo leaves Emancipation Park in Charlottesville, Virginia on Aug. 12, 2017.
Steve Helber/AP Photo
Given recent events, you might have had an inkling that extremist views have been resonating. Researchers from the Center for Peace Studies and Violence Prevention have the hard data to back it up.
Bartolomeo Vanzetti (left), handcuffed to Nicola Sacco, 1923.
Boston Public Library
At a time when anti-immigrant sentiment was widespread, the Sacco and Vanzetti trial starkly divided American opinion and stirred up a violent backlash around the world.
Exxon funded climate scientists while the bulk of its public-facing advertorials argued the science and cause of climate change was uncertain.
AP Photo/Mark Humphrey
A new study confirms what many already know: Exxon for years sowed uncertainty and doubt about climate change in the public. Should scientists reject certain funding sources?
LGBT veterans march in a Boston parade. Contrary to what some may say, the military has a long history of embracing socially marginalized groups.
AP Photo/Steven Senne
Whether it be African-Americans, Catholics or transgender people, the armed forces have played a vital role in shaping US social policy toward the country's minorities.
Who’s missing from this picture?
Here's what research actually says about differences between males and females – and the question of what's innate and what's acquired.
Eleven states now have some sort of law permitting guns on college campuses.
Lucio Eastman (Free State Project)
More and more states are passing legislation requiring that students and faculty be permitted to carry concealed weapons on campus. But shouldn't universities have a choice when it comes to campus safety?
Who’s inside the hoodie?
The Russian cyberthreat goes back over three decades, extends into the country's educational systems and criminal worlds, and shows no signs of letting up.
Images of Trump and North Korean leader Kim Jong Un are shown on a news program in Seoul, South Korea on Thursday, Aug. 10, 2017.
AP Photo/Ahn Young-joon
The international community has been trying to stop North Korea from developing long-range missiles for decades. So how did North Korea get them?
Laurene Powell Jobs, founder and chair of the Emerson Collective.
There are some benefits to the uptick in billionaire newspaper and magazine owners, who can weather short-term losses for the sake of long-term gains. But whose interests are really being served?
Paul Wright, in treatment for opioid addiction in June 2017 at the Neil Kennedy Recovery Clinic in Youngstown Ohio, shows a photo of himself from 2015, when he almost died from an overdose.
AP Photo/David Dermer
The number of people dying from opioid overdose continues to rise, in part because of cheap street drugs. Yet the price of a drug used to treat addiction is out of reach for many.