Controlled experiments are impossible in astronomy, as are direct measurements of physical properties of objects outside our solar system. So how do astronomers know so much about them?
Israeli soldiers move past a military medical vehicle on Oct. 10, 2023, at Kfar Aza, a kibbutz where Hamas militants killed Israelis days before.
Alexi J. Rosenfeld/Getty Images
Israel’s intelligence capacities are considered some of the best in the world – but unlike the US, it does not have a central organization coordinating all intelligence.
Cars lined up for gasoline in New Jersey in 1973 as supplies ran low and prices shot upward.
Frederic Lewis/Archive Photos/Getty Images
An estimated 150 hostages were taken by Hamas in Israel and brought back to Gaza. The government of Israel faces tough choices in dealing with the crisis.
In 2022, California built an emergency drought barrier across the West False River near Oakley to protect against saltwater intrusion.
AP Photo/Terry Chea
Saltwater intrusion is bad for human health, ecosystems, crops and infrastructure. Here’s how seawater can move inland, and why climate change is making this phenomenon more frequent and severe.
Comet Hale-Bopp was visible from Earth in 1997.
E. Kolmhofer, H. Raab; Johannes-Kepler-Observatory, Linz, Austria
The human body has been making antivirals for eons, long before scientists did. A protein in your cells called viperin produces molecules that work similarly to the COVID-19 antiviral remdesivir.
Address terms can prove to be a headache in the workplace.
skynesher via Getty Images
Gendered words can be offensive in certain contexts – it’s all in what’s being signaled, according to a sociolinguist
A new study found that college students better understand complex calculus concepts in active learning classes.
Hill Street Studios/DigitalVision via Getty Images
The enclave abutting Israel has been described as the world’s ‘largest open-air prison.’ Conditions have deteriorated for the population there under a 16-year blockade.
Seeking greenhorns with green thumbs.
Steve Smith/Tetra Images via Getty Images
An expert on civil conflicts explains why the international community has so far failed to create peace in Sudan, and what new opportunities lie ahead.
A soldier holds Taiwan’s national flag during military drills.
AP Photo/Chiang Ying-ying
An upcoming Supreme Court case that turns on race and party could affect how state legislatures shape voting maps and how Americans vote for decades to come.
The world’s newest Nobel laureate takes a bow.
Carlin Stiehl/Getty Images
A scholar who studies alternative expressions of spirituality visited secular, atheist and psychedelic churches and interacted with attendees. Here is what he found.
Cancer in children is often more invasive and aggressive than that of adults.
FatCamera/E+ via Getty Images
Children typically haven’t accumulated enough cellular damage to develop cancer. Because their bodies are still developing, pediatric cancers differ from adult cancers in key ways.
Many cultures integrate hot peppers into traditional dishes.
AP Photo/Susan Montoya Bryan, File
Not enough time is being set aside for school counselors and psychologists to help students work on mental health issues, a professor of school psychology says.
A view of the Al-Aqsa Mosque compound and its Dome of the Rock in Jerusalem’s Old City.
Ahmad Gharabli/AFP via Getty Images
The Al-Aqsa mosque, a flashpoint in Hamas’ recent assault against Israel, hosts daily prayers and Friday gatherings. It lies adjacent to important Jewish and Christian religious locales.
Dressed in orange prison garb, Payton Gendron is sentenced to life in prison for the murder of 10 Black people in Buffalo, N.Y.
Derek Gee/Buffalo News/Pool via Xinhua
Alaska has at least 120 glacier-dammed lakes, and almost all have drained at least once since 1985, a new study shows. Small ones have been producing larger floods in recent years.