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Researchers found that the House Sparrow Passer domesticus had the biggest population out of the total bird species surveys at 1.6 billion individuals.

An Estimated 50 Billion Birds Populate Earth, but Four Species Reign Supreme

House sparrows, European starlings, barn swallows and ring-billed gulls all occupy the billion-bird club with gargantuan population numbers

In the images, the Great Red Spot, Jupiter's superstorm, is seen in both visible and ultraviolet light, but it disappears into the background as a black splotch in the infrared image.

Peer Into Jupiter's Gassy Atmosphere With These Stunning New Photos

The images taken at various wavelengths reveal details about the gas giant's stormy atmosphere

Maya Lin's Ghost Forest is on view at Madison Square Park through November 14, 2021.

Haunting 'Ghost Forest' Resurrected in New York City

Artist Maya Lin hopes to call attention to one of the dire effects of climate change with an installation in Madison Square Park

The exhibition includes clandestine photographs of Nazi death marches. This image, taken by Maria Seidenberger, depicts a forced march from Buchenwald to Dachau.

When the Nazis Murdered Thousands by Sending Them on Forced Death Marches

Photographs, survivors' accounts on display at the Wiener Holocaust Library in London illuminate a lesser-known chapter of WWII

The defeated Carthaginians constructed this Temple of Victory at Himera, Sicily, following the first Battle of Himera in 480 B.C.

Contrary to Popular Lore, Ancient Greek Armies Relied on Foreign Mercenaries

Scientists studying fifth-century B.C. soldiers' teeth found evidence of military support from faraway lands

Haring's refrigerator door served as a kind of "guest register" for the famous friends who visited his SoHo apartment in the 1980s.

Keith Haring's Famous Friends, From Madonna to Andy Warhol, Left Their Mark on His Fridge Door

The contemporary artist's graffiti-covered refrigerator panel recently sold at auction for $25,000

Oxitec placed six hexagonal boxes of mosquitoes on private properties in the Florida Keys.

Genetically Modified Mosquitoes Take Flight to Fight Invasive Species in Florida

Invasive Aedes aegypti mosquitoes can carry disease, so Oxitec’s modified strain is designed to reduce their numbers

Mars as photographed by China’s Tianwen-1 probe after it entered the planet's orbit in February.

China's Zhurong Rover Lands on Mars

The achievement cements China as a major player in modern space exploration and could soon deliver discoveries about Mars' geology

Game developers consulted with historians to create accurate depictions of 19th-century Native American life. The new version features playable Native characters.

Innovation for Good

New 'Oregon Trail' Game Revisits Westward Expansion From Native Perspective

Developers hired three Indigenous historians to help revamp the iconic educational computer game

Remnants of a supernova called Cassiopeia A, located in our galaxy about 11,000 light-years from Earth. Scientists have long thought that supernovae were responsible for the creation of the heaviest elements, but new research suggests other types of stellar events may also be in play.

New Research

Scientists Find Plutonium Made in Outer Space on Ocean Floor

Research suggests the rare, heavy element may have been created by the collision of two neutron stars

The rock-cut tombs are carved into different levels of a mountain face at the site.

Cool Finds

Egyptian Archaeologists Accidentally Discover 250 Ancient, Rock-Cut Tombs

Some of the burials found at the Al-Hamidiyah necropolis date back 4,200 years

Stress-relief programs that integrate therapy pets can help students relax as they talk and think about their stressors without overwhelming themselves and may be more effective at providing relief than academic approaches to stress management.

For Stressed-Out College Students, Petting Therapy Dogs Has Long-Lasting Benefits

Compared to other experimental groups, undergrads who interacted with pups experienced improved executive functioning skills

New research estimates that Brazil's Atlantic Forest has regrown 4.2 million hectares of forest since 2000.

New Research

Globally, Forests the Size of France Have Grown Back Since 2000

New research illustrates the capacity of forests to regenerate if given the chance

Lincoln outlived her husband and three of her four children.

Why Historians Should Reevaluate Mary Todd Lincoln's Oft-Misunderstood Grief

A new exhibition at President Lincoln's Cottage connects the first lady's experiences to those of modern bereaved parents

At the end of April, the CDC released guidance that said fully vaccinated people could safely go outdoors without wearing masks; the new guidance expands on that to include most indoor activities.

New CDC Covid-19 Guidance Says Fully Vaccinated People Can Safely Go Maskless

In healthcare settings, mass transit, and where local laws require it, people should continue to wear masks

This 1822 painting by John Martin envisions the eruption of Mount Vesuvius. New research suggests a skeleton found in Herculaneum, a seaside town neighboring Pompeii, belonged to a Roman soldier sent to rescue victims from the volcano.

Cool Finds

Vesuvius Victim Identified as Elite Roman Soldier Sent on Failed Rescue Mission

The man may have been a Praetorian Guard dispatched by Pliny the Elder to save Herculaneum's residents from the volcanic eruption

Effa Manley, co-owner of the Negro Leagues' Newark Eagles, poses in the dugout of Ruppert Stadium in Newark, New Jersey, in 1948.

Baseball's Leading Lady Championed Civil Rights and Empowered Black Athletes

Effa Manley advocated for Black rights as a Negro Leagues team owner in the 1930s and '40s

The device allowed the man to write about 18 words per minute

New Research

New Device Allows Man With Paralysis to Type by Imagining Handwriting

When the man visualizes his written messages, a pair of electrical sensors measure his brain activity and translate it into letters

Bran Castle is relying on its connections to the puncture-happy vampire Dracula to entice people to get vaccinated. Here, masked visitors stand in front of a sign depicting syringes as vampire fangs.

Covid-19

'Dracula's Castle' Is Now Offering Visitors Free Covid-19 Vaccinations

Bran Castle's connections to the vampire may be as mythic as the monster himself, but the site remains a popular Romanian attraction

The oil crisis affected everything from home heating to business costs. But the impact was most obvious on the roads.

History of Now

Gas Shortages in 1970s America Sparked Mayhem and Forever Changed the Nation

Half a century ago, a series of oil crises caused widespread panic and led to profound shifts in U.S. culture

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