Slavery was a sticking point at the Constitutional Convention of 1787.
Howard Chandler Christy/The Indian Reporter
The Apportionment Clause forbids a direct tax on wealth. Expanding the 16th Amendment would not only allow such a tax but abolish slavery's last remnant in the US Constitution as well.
Trump’s historic meeting with North Korea dictator Kim Jung Un on June 12, 2018, in Singapore. Trump recently told a crowd that the two leaders ‘fell in love.’
Evan Vucci/AP Photo
Meeting with heads of state has become routine for presidents, but Trump's way with words and gestures rattles many in the diplomatic community. The biggest concern is his sweet talk to dictators.
A mix of fats, such as those found in nuts, avocados, salmon and olives, could be healthy and more satisfying.
When did eating become so confusing? In the 1960s, studies began to show a link between heart disease and dietary fat, and fat was demonized. As it turns out, fat is nuanced and may not be so bad.
A small memorial for Srinivas Kuchibhotla outside Austins Bar and Grill in Olathe, Kansas.
AP Photo/Orlin Wagner
Law enforcement officials aren't trained in recognizing hate crimes, leaving national numbers on these attacks unreliable.
T.M. Landry College Prep co-founders Tracey and Michael Landry have stepped down from the school’s board as authorities investigate a wide range of allegations against the school, from academic fraud to physical abuse.
T.M. Landry College Prep
T.M. Landry College Prep, facing allegations of abuse, is known for getting students from poor backgrounds into Ivy League schools. An education scholar says the school's focus was misplaced.
A sculpture of Meister Eckhart in Germany.
Meister Eckhart was a 14th-century Dominican friar, who gave sermons on the direct experience of God. His words are finding resonance among today’s spiritual seekers.
Team member Felix Knight looks through archives at the Church of Espiritu Santo in Havana, Cuba.
The Slave Societies Digital Archive documents the lives of approximately 6 million free and enslaved Africans in the Americas.
Una vez que la gente llegue allí, Marte se contaminará con vida terrestre.
NASA/Pat Rawlings, SAIC
¿Por qué los humanos estamos dispuestos a pasar por alto el riesgo que supone para la vida marciana la exploración y colonización del planeta rojo?
Once people get there, Mars will be contaminated with Earth life.
NASA/Pat Rawlings, SAIC
NASA's InSight Mars lander touches down Nov. 26, part of a careful robotic approach to exploring the red planet. But human exploration of Mars will inevitably introduce Earth life. Are you OK with that?
The split gill mushroom
Schizophyllum commune, a fungal species that includes more than 20,000 sexes.
There is more to sex than male and female. For some species there are hundreds and even thousands of sexes and mating types.
Shutterstock / Gaelfphoto
Los psicólogos cognitivos conocen la forma en la que trabaja nuestra mente. No sólo no nos damos cuenta de los errores y la información que sabemos falsa, sino que también la recordamos como cierta.
Supply and demand are often out of sync in the drug industry.
Shortages and high prices are making pharmaceuticals, often including generics, out of reach for millions of Americans.
Some American Indian tribes, including the Navajo Nation, have moratoriums on genetic testing.
Why is Elizabeth Warren's DNA test so controversial with Native American groups? Two Indigenous geneticists explain the history and science behind the debate.
Mortality data show only the final result of opioid overdose, not why it happens.
Skyward Kick Productions/Shutterstock.com
The toll of the opioid epidemic is often derived from toxicology reports. These rely on drug tests. A medical historian explains these tests and how they fall short of capturing why people are dying.
Three Democratic members of the Senate Judiciary Committee listen to testimony in the Brett Kavanaugh assault allegation hearings, Sept. 27, 2018.
Saul Loeb/Pool Image via AP
The Kavanaugh hearings have brought sexual assault to the forefront. A just-published study suggests that bystanders can help prevent it.
Scientists are now using evolution to create designer proteins for therapies and industrial processes.
Johan Jarnestad / The Royal Academy of Sciences
Nature doesn't always make the things we need so three Nobel Prize winners figured out how to fast-track evolution in the lab to create medicines, biofuels and industrial chemicals for modern life.
Trump celebrates a tentative deal to replace NAFTA with advisors and Mexican counterparts.
The US and Mexico announced a bilateral trade deal that pointedly excludes Canada. A economic law expert explains what it means.
Harry Potter books have captured the imaginations of entire generations.
Clark Jones/Courtesy of Scholastic, Inc./AP
A developmental psychologist explains how she uses Harry Potter books to make child development more relatable to first-year college students, many of whom grew up on the wildly popular books.
Republican presidential candidate Richard Nixon smiles for the cameras during a 1968 news conference.
Fifty years ago, an insurance agent named Paul Simpson was convinced of rampant bias on the evening news. So he embarked on a project to record each broadcast and store them at Vanderbilt University.
Artist depiction of an asteroid on a collision course with Earth.
An asteroid on a collision course with Earth is inevitable. Astronomer Michael Lund explains how a new telescope under construction in Chile will become a vital tool for detecting objects that could devastate our planet.