Asteroid Ryugu photographed from a distance of about 12 miles (20 kilometers) looks just gray and bland, but a close-up provides more color.
JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu and AIST
It is a pretty spectacular achievement to not only rendezvous with an asteroid as it is whizzing around the Sun but also collect a sample. Here's what the researchers learned.
Diesel emissions are a major source of fine particle pollution.
Bob Chamberlin/Getty Images
After a 5-year review, the EPA is leaving US standards for fine particle air pollution unchanged, even though recent studies suggest that tightening them could save thousands of lives yearly.
Throughout his career, Hughes was eager to mentor and promote the work of writers abroad.
Library of Congress
To foreigners, he was a fellow traveler who recognized the plight of the oppressed.
Coronavirus seems to be on a collision course with the US economy and its 12-year bull market.
AP Photo/Ng Han Guan
An economist explains how a virus like COVID-19 could disrupt the US economy – and why it's too soon to freak out just yet.
Le 15 janvier 2020, dans les environs de Budgong, en Nouvelle-Galles du Sud (Australie).
Avec les feux de forêt, la présence massive de cendres et de sédiments dans les cours d’eau constitue une menace pour l’approvisionnement hydrique des populations.
Previously undocumented, this tiny extra digit – called a "pseudothumb" – is a structure on each wrist made of bone and cartilage.
The Rim Fire burned 256,000 acres of the Stanislaus National Forest and Yosemite National Park in 2013.
(USDA Forest Service, Chris Stewart)
Wildfires reduce the reliability of city water supplies in North America. But active forest management provides a key to the solution.
Il existe quelques stratégies pour éviter de pleurer en coupant des oignons.
Les oignons libèrent une substance irritante pour se défendre, mais il existe quelques techniques pour ne pas (trop) pleurer.
Need a handkerchief?
Num LP Photo/Shutterstock
Like many plants, onions have defenses to ward off creatures that may want to eat them. Their secret weapon is a kind of natural tear gas.
A photo of a coyote in eastern Panama.
Coyotes, whose range is expanding, are now at the doorstep of South America.
Two of Alexander Hamilton’s Federalist Papers addressed impeachment.
AP Photo/Manuel Balce Ceneta
Teachers grappling with how to teach current events at divisive times should emphasize history, study original sources and address polarization.
Vehicles are a major source of particulate air pollution.
Scientists who were appointed to advise the EPA on air pollution kept meeting independently after the agency dissolved their panel. They say current regulations aren't strict enough.
Las inundaciones que provocaron huracán María en Puerto Rico en 2017 resultaron desastrosas para los residentes. Pero para los peces fueron nativos fueron un alivio después de muchos años de sequía.
Las tormentas grandes que traen mucha lluvia pueden restaurar el balance natural entre los peces nativos y las especies importadas, según informa un nuevo estudio del Caribe.
Extreme flooding during Hurricane Maria in 2017 was hazardous for the Puerto Rican people. But a new study finds that it helped native fish populations rebound after years of drought.
AP Photo/Alvin Baez
Big storms with lots of flooding, like hurricanes Dorian and Maria, actually restore the Caribbean's delicate balance between native and nonnative fish species, new research finds.
Los días 5 y 6 de junio de 2012, el Observatorio de Dinámica Solar de la NASA recogió imágenes de uno de los eventos solares más raros: el tránsito de Venus a través de la faz del Sol.
El planeta vecino es caliente y ácido, y su superficie está oculta por gruesas nubes de ácido sulfúrico. Quizá por estas dificultades, no se ha beneficiado de la atención que han recibido Marte y la Luna. Pero Venus puede ofrecer información sobre el futuro de la Tierra.
On June 5-6, 2012, NASA’s Solar Dynamics Observatory collected images of one of the rarest predictable solar events: the transit of Venus across the face of the Sun.
This hot, acidic neighbor with its surface veiled in thick clouds hasn't benefited from the attention showered on Mars and the Moon. But Venus may offer insights into the fate of the Earth.
E-scooters ready for action in Santiago, Chile.
Shared e-scooter programs may seem like a green way to get around, but these small vehicles can have big environmental footprints.
A firefly’s light is part of its mating strategy.
For many people, the gentle blinks of fireflies flashing are a favorite part of summer evenings. An entomologist explains some lightning bug basics.
Contact with nature reduces stress and aggression, one reason scholars say urban green space may reduce violence.
Some parks reduce violence in the local vicinity. Other parks attract crime. The difference has to do with how these urban green spaces are designed, programmed and managed, experts say.
Civil rights activist Dorothy Cotton teaches a student in one of her Citizenship Education Program classes.
Bob Fitch Photography Archive, Department of Special Collections, © Stanford University Libraries
Dorothy Cotton never publicly spoke about her intimate relationship with King. But no woman – not even King's wife – was closer to the civil rights icon during the last years of his life.