Franklin Delano Roosevelt, standing at center and facing left just above the eagle, takes the presidential oath of office for the third time in 1941.
FDR Presidential Library and Museum via Flickr
Only one president has done so – Franklin Delano Roosevelt – but others considered it, and even tried.
A demonstration outside the Hennepin County Government Center in Minneapolis on March 29, 2021, the day Derek Chauvin’s trial began on charges he murdered George Floyd.
Stephen Maturen/Getty Images
There's a divergence in how a trial is conducted, what rules govern it – and the larger issue of racial justice. That divergence affects the legitimacy of any verdict.
A COVID-19 patient in an ICU unit in a hospital in Capetown, South Africa, in December 2020. A variant emerged in South Africa that has since spread to other parts of the world. Other new variants could emerge elsewhere.
Rodger Bosch/AFP via Getty Images
As the US vaccinates millions more people each day, the novel coronavirus works to survive. It does this by mutating. So far, several variants are worrisome. A virologist explains what they are.
Research shows small acts of kindness can make a big difference in classrooms.
kali9/E+ via Getty Images
'Behavior vaccines' – practices meant to improve safety and well-being – have been around for years. An educational psychologist says they are particularly important for schools to adopt now.
How can more scientists learn to communicate like Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases?
Anna Moneymaker / POOL / AFP via Getty Images
#Scicomm is a hashtag, and there are many programs that claim to teach scientists how to be better communicators. But it's hard to show exactly what they're accomplishing.
Comments and livestreams can lead to physical fights, shootings and even death.
Photo illustration by Rafael Henrique/SOPA Images/LightRocket via Getty Images
Social media isn’t just mirroring conflicts happening in schools and on streets – it’s intensifying and triggering new disputes.
Periodical cicada in Washington, D.C., May 2017.
One of the largest groups of 17-year cicadas, Brood X, last emerged from underground in 2004. The next generation will arrive starting in April.
Be careful on the road.
Despite a decrease in traffic during the pandemic, single-vehicle car crashes increased.
Stream temperature affects the survival of fish like salmon and trout.
Peter Adams/Avalon/Universal Images Group via Getty Images
Groundwater was once thought to buffer streams from warming, but an inexpensive new technique shows streams fed by shallow groundwater may be just as susceptible as those without.
No guessing who in this 1864 depiction may have been compensated after slavery ended.
API/Gamma-Rapho via Getty Images
History is full of examples of nations paying out to compensate for slavery. But the money never went to those who suffered under the system, only those who profited.
One study found that 95% of baby foods tested contained at least one heavy metal.
Plume Creative via Getty Images
Reports from baby food companies show questionable levels of arsenic, lead and other heavy metals. Here's what parents need to know.
Busy highways are large sources of air pollution.
Larry D. Moore via Wikimedia Commons
Living next to a highway is not great for health, but a new study shows that running air filters indoors can remove tiny particles of pollution and lower blood pressure.
U.S. Secretary of Education nominee Miguel Cardona testifies during his confirmation hearing.
Susan Walsh/Getty Images
Four experts weigh in on ways to replenish the US teacher workforce and curb burnout.
Pharmaceutical companies recalled metformin, a type II diabetes drug, after high levels of impurities of NDMA, a known carcinogen, were found in the tablets.
Scott Olson via Getty Images
A probable carcinogen known as NDMA can be created in a patient's drug or body even if there was no NDMA in the manufactured drug as it left the factory.
U.S. reliance on food assistance is rising during the coronavirus pandemic as more people grapple with economic hardship.
Spencer Platt/Getty Images
A food policy researcher helps make sense of the lexicon of US food policy terms, and explains how they relate to racial justice.
When they moved instruction online, many schools began distributing grab-and-go lunches.
AP Photo/Lynne Sladky
It helped that school food service staff quickly changed their preparation, packaging and distribution methods to feed students who were no longer eating in cafeterias.
Parent beetle regurgitating liquefied carrion to its young.
If you think only humans engage in disinformation, think again. Here is a stunning example of a beetle manipulating the odors emitted from a rotting corpse to keep it hidden from competitors.
An important ceremony: the U.S. Capitol during President Donald Trump’s 2017 inauguration.
AP Photo/Patrick Semansky
Formal ceremonies and rituals can trigger psychological signals that command people's attention and strengthen the perceived importance of those moments.
Twitter’s suspension of Donald Trump’s account took away his preferred means of communicating with millions of his followers.
AP Photo/Tali Arbel
Banning extremists from social media platforms can reduce hate speech, but the deplatforming process has to be handled with care – and it can have unintended consequences.
Toutes les prévisions, qu'elles soient scientifiques ou politiques, comportent une part d'incertitude.
CasarsaGuru/E+ via Getty Images
Que vous prédisiez l’issue d’une élection ou que vous étudiiez l’efficacité d’un nouveau médicament, il y aura toujours une certaine incertitude calculée par une marge d’erreur.