Five Things We’ve Learned About Fear Since Last Halloween
Including why screams get our brain’s attention and why a drop of “love hormone” in our nose could make us less fearful
Arsenic and Old Graves: Civil War-Era Cemeteries May Be Leaking Toxins
The poisonous element, once used in embalming fluids, could be contaminating drinking water as corpses rot
Why Do Humans Have Allergies? Parasite Infections May Be the Trigger
Protein analysis suggests that antibodies that evolved to fight parasites might be turning their focus to otherwise harmless agents
This Acoustic Tractor Beam Can Levitate Small Objects With Sound
The device allows researchers to float and manipulate targets with just a single array of ultrasound emitters
Ask Smithsonian: Is the World Due for Another Massive Plague Outbreak?
It is highly unlikely, experts say, but a plague-based bioterror assault is another matter
Plague Was Infecting Humans 3,300 Years Earlier Than Thought
DNA from Bronze Age victims helped pinpoint mutations that allowed the disease to go from localized illness to deadly pandemic
Scientists Are Working on a Pill That Just Might Replace Exercise
The idea is to create a drug that mimics the molecular changes exercise causes in the body. But it’s no small challenge
The Rise of DIY Genetic Testing
Some people are skipping the doctor’s office and using the internet to order and interpret their own DNA tests
A search through the Nobel archives shows how the history of the famous prize is filled with near misses and flukes
Millions of Americans Are Getting Lost in Translation During Hospital Visits
Miscommunication due to language barriers is a growing health care issue, and technologies to aid interpretation are racing to keep up
Americans Are Eating Later, and That May Contribute to Weight Troubles
Our bodies didn’t evolve to handle midnight pizzas
You Produce a Microbial Cloud That Can Act Like an Invisible Fingerprint
The unique cloud follows you wherever you go—and could ID you in a crowd
Six Ways Electrical Brain Stimulation Could Be Used in the Future
Scientists are exploring how mild electrical shocks can treat, and perhaps even change, brains
Air Pollution Kills More Than 3 Million People Every Year
Fine particulates and ozone have been linked to deaths from heart disease, stroke and lung cancer around the globe
A Single Protein Is the Root of Dengue’s Virulence
But researchers who found the culprit say it could be a clue in developing a vaccine for the mosquito-borne virus
Winning Really Does Taste Sweet, Because Emotions Change Taste Perception
A study of hockey fans sampling ice cream may offer clues to the origins of emotional eating disorders
Ask Smithsonian: How Does Skin Heal?
The skin is an organ system that is unique to each individual, so not everyone heals the same way
Baby’s Cells Can Manipulate Mom’s Body for Decades
An evolutionary approach may help scientists understand why mothers become genetic chimeras and how that affects their health
A Mouthguard That Could Measure Concussions
Professional football, rugby, and other contact sports could benefit from it
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