Three soldiers (far right) carry karnyxes, long horns with frightening boar-headed mouths that produce eerie calls during battle.
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Since antiquity people have harnessed sound as a weapon, and the practice continues – in new high-tech ways – today.
A girl grieves for a friend killed in the Uvalde shooting.
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Research shows that school shootings can lead to years of health, educational and economic detriment for students who survive the attack.
Many places have banned sunscreens with certain chemicals in an attempt to help protect coral reefs.
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Researchers have long suspected that an ingredient in sunscreen called oxybenzone was harming corals, but no one knew how. A new study shows how corals turn oxybenzone into a sunlight-activated toxin.
Las empresas petroleras conocían el riesgo mucho antes que la mayoría del resto del mundo.
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Documentos corporativos de las últimas seis décadas muestran que los jefes de la industria energética habían sido informados en forma privada de que sus productos alterarían el clima de todo el planeta.
Tourists cross a hanging bridge in the treetops of Costa Rica’s Monteverde cloud forest.
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Tourism revenues account for almost 10% of Costa Rica’s gross domestic product. New research shows that charismatic wildlife is necessary but not sufficient to attract ecotourists.
The human brain isn’t built to understand large numbers.
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The brain can count small numbers or compare large ones. But it struggles to understand the value of a single large number. This fact may be influencing how people react to numbers about the pandemic.
Poetry can be a way for people to come together.
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Poetry can unite people when all seems lost. The Conversation US has pulled together four articles from its archives that speak on the power of poetry.
Homes overlook a forest in the wildland-urban interface in Arizona.
Marius von Essen
A new study maps vegetation’s fire risk across the West and shows where population in the highest-risk areas from California to Texas is booming.
Sentenced to life.
Experts help explain the context around the murder of Ahmaud Arbery, and subsequent trial and convictions of Gregory McMichael, Travis McMichael and William Bryan.
Volunteers across the U.S. tag and count monarchs during the insects’ annual migrations.
AP Photo/Carolyn Kaster
Informed data donations are different from the usual online data experience. They’re easier to manage because of technological advances.
Could postcards help reach people who need social services?
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Government agencies are setting up new websites and phone hotlines to provide information. But those might not be the best ways to engage with people who need help the most.
Spotted hyenas provide ecosystem services that improve human welfare and contribute to sustainable development goals.
How do regular people participate in philanthropy?
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Stanford researcher Lucy Bernholz is re-imagining what philanthropy looks like and is trying to understand how average people create, fund and distribute shared social goods in the digital age.
A Kenosha, Wisconsin, jury found Kyle Rittenhouse not guilty of murder on Nov. 19, 2021. His trial sparked a national debate over gun rights and self-defense.
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Spoiler alert: Stolen guns arm criminals, and limiting gun carrying outside the home reduces violent crime.
Plastic debris on a beach on Lanai, a sparsely populated Hawaiian island.
An estimated 8 million metric tons of plastic waste enters the ocean each year – equivalent to dumping in a garbage truckload of it every minute. A new report calls on the US to help stem the deluge.
Aging U.S. infrastructure: Rust on the underside of the Norwalk River Railroad Bridge, built in 1896 in Norwalk, Conn., and scheduled for replacement starting in 2022.
AP Photo/Susan Haigh
What will the US$1.2 trillion infrastructure bill pay for? Here are some of the things it will help build, fix or remove.
L’année 2021 devrait afficher 39 milliards de tonnes d’émissions de CO₂.
Après une forte baisse des émissions en 2020 due à la pandémie de Covid-19, 2021 témoigne d’une inquiétante reprise, souligne la nouvelle étude du Global Carbon Projet.
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Preocupa especialmente la tendencia al alza a largo plazo de las emisiones de CO₂ procedentes de la quema de combustibles fósiles, que están lejos de llegar a cero en 2050.
Most concerning is the long-term upward trends of CO₂ emissions form burning fossil fuels, which are far from trending towards net-zero by 2050.
The oil industry was aware of the risks of climate change decades ago.
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Transcripts and internal documents show how the industry shifted from leading research into fossil fuels’ effect on the climate to sowing doubt about science.