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The Pioneering Health Officer Who Saved Portland From the Plague

Tasked with curbing a 1907 outbreak, Esther Pohl emphasized the importance of clean, vermin-free environments




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The Forgotten American Explorer Who Discovered Huge Parts of Antarctica

It’s been 180 years since Charles Wilkes voyaged to the Antarctic continent and his journey has never been more relevant




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How Epidemics of the Past Changed the Way Americans Lived

Past public health crises inspired innovations in infrastructure, education, fundraising and civic debate




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In Groundbreaking Find, Three Kinds of Early Humans Unearthed Living Together in South Africa

The different hominid species, possibly including the oldest-known Homo erectus, existed in the region's hills and caves




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Breaking Down the Two Tests That Could Help Contain the COVID-19 Pandemic

One detects an active infection; another signals that the virus has already left the body. Both are critical for tracking the spread of disease




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More Than 30 Million Years Ago, Monkeys Rafted Across the Atlantic to South America

Fossil teeth uncovered in Peru reveal that an extinct family of primates, thought to have lived only in Africa, made it across the ocean




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Here’s How to Find Optimism in This Moment of Fear and Uncertainty

The Smithsonian's Earth Optimism Summit will now stream online starting this Earth Day; tune in and be inspired




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What We Can Learn From 1918 Influenza Diaries

These letters and journals offer insights on how to record one's thoughts amid a pandemic




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Copper’s Virus-Killing Powers Were Known Even to the Ancients

The SARS-CoV-2 virus endures for days on plastic or metal but disintegrates soon after landing on copper surfaces. Here’s why




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Here's Why This Smithsonian Scientist Studies Ancient Pathogens

As a biological anthropologist focused on health, diseases are part of Sabrina Sholts' specialty




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To Silence Wind Turbines and Airplanes, Engineers Are Studying Owl Wings

No one knows exactly how the nocturnal hunters manage their whisper-soft flight, yet it's inspiring the design of quieter airplanes, fans and wind turbines




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The American West May Be Entering a ‘Megadrought’ Worse Than Any in Historical Record

A new study of ancient climate has a dire warning about today's dry conditions




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Has Anyone Ever Run for President While in Prison? And More Questions From Our Readers

You've got questions. We've got experts




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The Science of Fear, the Royal Scandal That Made France Modern and Other New Books to Read

The fourth installment in our weekly series spotlights titles that may have been lost in the news amid the COVID-19 crisis




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Why the New Coronavirus Affects Some Animals, but Not Others

While the virus seems capable of infecting some pets and wild animals, these cases probably aren’t occurring often




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What an 1836 Typhus Outbreak Taught the Medical World About Epidemics

An American doctor operating out of Philadelphia made clinical observations that where patients lived, not how they lived, was at the root of the problem




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Could Rainfall Have Triggered the 2018 Eruption of Hawaiian Volcano Kīlauea?

A new study posits that groundwater pressure might have been a tipping point for the magma system near the eruption




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LIVE NOW: Watch the Smithsonian's Earth Optimism Digital Summit

The two-day virtual event will bring scientists and many other experts to highlight success stories in conservation




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Here's How Local Communities Can Help Save Mangroves

The Global Mangrove Alliance has a goal of increasing the world’s mangrove cover by 20 percent over the next decade




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CNN's Bill Weir Offers Solutions for How to Talk Climate Change in a Contentious World

Smithsonian's Earth Optimism Summit features CNN's Chief Climate Correspondent Bill Weir




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What Rome Learned From the Deadly Antonine Plague of 165 A.D.

The outbreak was far deadlier than COVID-19, but the empire survived




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These Are the Decade’s Biggest Discoveries in Human Evolution

Celebrate the tenth anniversary of the Smithsonian's "David H. Koch Hall of Human Origins" with some of the biggest discoveries in human evolution




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The Complicated Legacy of Herbert Spencer, the Man Who Coined 'Survival of the Fittest'

Spencer's ideas laid the groundwork for social Darwinism, but scholars say there was much more to the Victorian Age thinker than that




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Take a Virtual Tour of the Smithsonian American Art Museum's Humboldt Exhibition

Meet the hugely influential polymath, who foretold of climate change and inspired artists, writers and even the founder of the Smithsonian




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In a Tunnel Beneath Alaska, Scientists Race to Understand Disappearing Permafrost

What lies inside the icy cavern seems more and more like a captive, rare animal, an Earth form that might soon be lost




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How Evolution Helps Us Understand and Treat Cancer

A new book argues that controlling cancer is within reach if scientists are able to anticipate the evolution of resistance to traditional treatments




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Ten Animals and Plants Around the World That You Can (Virtually) Adopt

While COVID-19 stymies travel, help conserve those things—from cacti to manta rays—that will beckon you later




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Shakespearean Stabbings, How to Feed a Dictator and Other New Books to Read

The sixth installment in our weekly series spotlights titles that may have been lost in the news amid the COVID-19 crisis




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Plasma electrons can be used to produce metallic films

Computers, mobile phones and all other electronic devices contain thousands of transistors, linked together by thin films of metal. Scientists have developed a method that can use the electrons in a plasma to produce these films.




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Benthos in the Antarctic Weddell Sea in decline

Over the past quarter-century, changes in Antarctic sea-ice cover have had profound impacts on life on the ocean floor.




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Highly efficient hydrogen gas production using sunlight, water and hematite

Hydrogen is a possible next generation energy solution, and it can be produced from sunlight and water using photocatalysts. A research group has now developed a strategy that greatly increases the amount of hydrogen produced using hematite photocatalysts. In addition to boosting the high efficiency of what is thought to be the world's highest performing photoanode, this strategy will be applied to artificial photosynthesis and solar water-splitting technologies via university-industry collaborations.




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Variance in tree species results in the cleanest urban air

What kind of an effect do trees have on aerosol particle concentrations in cities? Modelling carried out at the University of Helsinki revealed that the air was cleanest on the street level with three rows of trees of variable height situated along boulevard-type city street canyons.




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Ancient Andes, analyzed

An international research team has conducted the first in-depth, wide-scale study of the genomic history of ancient civilizations in the central Andes mountains and coast before European contact. The findings reveal early genetic distinctions between groups in nearby regions, population mixing within and beyond the Andes, surprising genetic continuity amid cultural upheaval, and ancestral cosmopolitanism among some of the region's most well-known ancient civilizations.




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The feeling a limb doesn't belong is linked to lack of brain structure and connection

People with body integrity dysphoria (BID) often feel as though one of their healthy limbs isn't meant to be a part of their bodies. They may act as though the limb is missing or even seek its amputation 'to feel complete.' Now, researchers have found that these feelings that a limb doesn't belong are mirrored in the brains of people with this condition.




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Quantum jump tipping the balance

Measuring tiny differences in mass between different quantum states provides new insights into heavy atoms.




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A role reversal for the function of certain circadian network neurons

A new study y reveals surprising findings about the function of circadian network neurons that undergo daily structural change. The research could lead to a better understanding of how to address circadian rhythm disruptions in humans and facilitate preventing a host of associated health problems, including increased risk for cancer and metabolic syndrome.




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Immunity of recovered COVID-19 patients could cut risk of expanding economic activity

New modeling of coronavirus behavior suggests that an intervention strategy based on shield immunity could reduce the risk of allowing the higher levels of human interaction needed to support expanded economic activity.




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Planting trees is no panacea for climate change

A restoration ecologist has a simple message for anyone who thinks planting 1 trillion trees will reverse the damage of climate change: 'We can't plant our way out of climate change.'




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Revealing links between education and a good diet

Educational status appears to have positive influence on a healthy diet, particularly in low income countries, according to new research examining European nutritional data.




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Laser loop couples quantum systems over a distance

For the first time, researchers have succeeded in creating strong coupling between quantum systems over a greater distance. They accomplished this with a novel method in which a laser loop connects the systems, enabling nearly lossless exchange of information and strong interaction between them. The physicists reported that the new method opens up new possibilities in quantum networks and quantum sensor technology.




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Physicists shed light on the nanoscale dynamics of spin thermalization

In physics, thermalization, or the trend of sub-systems within a whole to gain a common temperature, is typically the norm. There are situations, however, where thermalization is slowed down or virtually suppressed; examples are when considering the dynamics of electron and nuclear spins in solids. Understanding why this happens and how it can be controlled is presently at the center of a broad effort, particularly for applications in the emerging field of quantum information technologies.




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Telescopes and spacecraft join forces to probe deep into Jupiter's atmosphere

NASA's Hubble Space Telescope and the ground-based Gemini Observatory in Hawaii have teamed up with the Juno spacecraft to probe the mightiest storms in the solar system, taking place more than 500 million miles away on the giant planet Jupiter.




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Key mechanism of cytokine storm in Castleman disease

Researchers discover what is happening at the cellular level when Castleman patients experience a cytokine storm.




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Olanzapine may help control nausea, vomiting in patients with advanced cancer

Olanzapine, a generic drug used to treat nervous, emotional and mental conditions, also may help patients with advanced cancer successfully manage nausea and vomiting unrelated to chemotherapy.




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First simulation of a full-sized mitochondrial membrane

Scientists have developed a method that combines different resolution levels in a computer simulation of biological membranes. Their algorithm backmaps a large-scale model that includes features, such as membrane curvature, to its corresponding coarse-grained molecular model. This has allowed them to zoom in on toxin-induced membrane budding and to simulate a full-sized mitochondrial lipid membrane. Their approach opens the way to whole-cell simulations at a molecular level.




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How a molecular 'alarm' system in plants protects them from predators

Some plants, like soybean, are known to possess an innate defense machinery that helps them develop resistance against insects trying to feed on them. However, exactly how these plants recognize signals from insects has been unknown until now. Scientists have now uncovered the cellular pathway that helps these plants to sense danger signals and elicit a response, opening doors to a myriad of agricultural applications.




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Newly discovered mechanism can explain increased risk of dementia

Millions of people around the world use acid suppressants called proton pump inhibitors for conditions like heartburn, gastritis and stomach ulcers. Researchers at Karolinska Institutet in Sweden now report that how the long-term use of these drugs could increase the risk of developing dementia. Their results are published in the journal Alzheimer's & Dementia.




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Canadian study finds temperature, latitude not associated with COVID-19 spread

A new study finds that temperature and latitude do not appear to be associated with the spread of coronavirus disease 2019 (COVID-19), but school closures and other public health measures are having a positive effect.




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Neanderthals were choosy about making bone tools

Evidence continues to mount that the Neanderthals, who lived in Europe and Asia until about 40,000 years ago, were more sophisticated people than once thought. A new study shows that Neanderthals chose to use bones from specific animals to make a tool for specific purpose: working hides into leather.




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Fishing can disrupt mating systems

In many fish species body size plays an important role in sexual selection. Large individuals are preferred mating partners because they can enhance offspring survival by providing better quality resources than small individuals. While large females and males are often favored by sexual selection, fishing targets and removes these reproductively superior individuals.