Most teens aren’t getting enough sleep, leading to poorer academic performance. Early school start times combined with natural changes in hormones and the circadian rhythm could be to blame.
Planting trees on deforested lands in Panama.
Jorge Aleman/Smithsonian Tropical Research Institute
It might seem counterintuitive to suggest timber harvesting when the goal is to restore forests, but that gives landholders the economic incentive to protect and manage forests over time.
A KKK rally in Dayton, Ohio, on Sept. 21, 1923.
Dayton Metro Library
Racial threats and slights take a toll on health, but the continual invalidation and questioning of whether those so-called microaggressions exist has an even more insidious effect, research shows.
A U.S. Justice Department image showing Victor Manuel Rocha during a meeting with an FBI undercover employee.
U.S. Department of Justice via AP
Cuba gets less attention as an espionage threat than Russia or China, but is a potent player in the spy world. Its intelligence service has already penetrated the US government at least once.
Ukrainian President Volodymyr Zelenskyy and U.S. President Joe Biden arrive for a news conference on Dec. 12, 2023, in Washington, D.C.
Alex Wong/Getty Images
With US aid to Ukraine locked in a partisan battle over security at the US southern border, Ukrainian President Volodymyr Zelenskyy faces the possibility of losing his largest supporter.
Russian riot police detain gay rights activists during World Day Against Homophobia and Transphobia in St. Petersburg in 2019.
Olga Maltseva/AFP via Getty Images
Far-right American Christians once viewed Soviet culture as a menace to their values. Today, some authoritarian-leaning admirers wish their country were more like Putin’s Russia.
There has been a flood of images on social media about the Israel-Hamas war.
NurPhoto via Getty Images
Water shortages are one of the greatest problems created by a warming world. A decentralized water system is a compelling counterargument to the notion that bigger is better.
Indigenous Coast Salish women wove woolly dogs’ fur into blankets.
Artist's reconstruction by Karen Carr
Dogs have lived with Indigenous Americans since before they came to the continent together 10,000 years ago. A new analysis reveals the lineage of one 1800s ‘woolly dog’ from the Pacific Northwest.
A frail but free Alberto Fujimori.
Renato Pajuelo/AFP via Getty Images
The former Peruvian strongman appeared frail as he left prison. But his influence on politics remains strong.
Government information sources like the U.S. patent database often file bad information without labeling it or providing a way to retract it.
Thinglass/iStock via Getty Images
Theranos was dissolved years ago, and its CEO, Elizabeth Holmes, is in prison, but the company’s patents based on bad science live on – a stark example of the persistence of faulty information.
Short winter days can influence your brain chemistry.
Schon/Moment via Getty Images
Some of winter’s effects have been tied to cultural norms and practices, while others likely reflect our bodies’ innate biological responses to shorter days and colder weather.
The cost of safeguarding America’s schools from cybercriminals could run as high as $5 billion.
boonchai wedmakawand via Getty Images
Nir Kshetri, University of North Carolina – Greensboro
Cybercriminals target schools because they’re uniquely vulnerable. A cybersecurity expert explores whether a new White House initiative will be enough to deter bad actors.
The New York City borough of Manhattan at night, viewed from the Rockefeller Center observation deck.
Sergi Reboredo/VW Pics/Universal Images Group via Getty Images
Migrating birds need stopover locations en route where they can rest and feed. A new study shows that artificial light draws them away from sites they would normally use and into risky zones.
A Palestinian militant rides on the back of a motorcycle near a crossing between Israel and the northern Gaza Strip on Oct. 7, 2023.
Ahmed Zakot/SOPA Images/LightRocket via Getty Images
A scholar of the Islamic State group says Hamas has undergone a radical ISIS-inspired transformation that has not yet gotten widespread public attention.
A view of the Grand Canyon after a snowfall.
Tom Stoddart/Getty Images
Though progressive politics at the turn of the 20th century called for the protection of America’s national parks, it did so for the enjoyment of white people.
Take your cuppa elsewhere.
iStock/Getty Images Plus
Drug development takes a great deal of time, money and effort. While future profits play a big factor in which diseases gets prioritized, advocacy and research incentives can also tilt the scale.
Una pintura con colores oscuros y dorados muestra a María y José en el pesebre con el niño Jesús.
Nora Carol Photography/Getty Images
Conflict has escalated between Joe Biden and Israeli leader Benjamin Netanyahu over the conduct of the Israel-Hamas war. But a national security veteran says the US has little leverage over Israel.
Under cover of night, Colonists boarded the ships, dumped the tea chests and sparked a revolution.
Hulton Fine Art Collection/Art Images via Getty Images
An attack on private property angered Colonial leaders as much as the British public – but a strong reaction from Parliament hardened the positions of the opposing sides, making compromise impossible.