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How Do Geiger Counters Work?
science.howstuffworks.com/geiger-counter.htm
First developed in the 1920s, Geiger counters still use the same basic technology to detect radiation, but today can be the size of a smartphone.
The Ultimate Sherlock Holmes Quiz
play.howstuffworks.com/quiz/sherlock-holmes-quiz
Think you're the ultimate Sherlock Holmes fan? Take our quiz on the life and legends of the great detective himself to find out!
Something Produced a Surprising Spike of Methane on Mars
science.howstuffworks.com/methane-spike-mars.htm
Of all the discoveries made on Mars, the detection of methane blowing in the air is probably the most compelling. HowStuffWorks investigates the Mars methane mystery.
How Military Camouflage Works
science.howstuffworks.com/military-camouflage.htm
Camouflage is critical in military operations. Learn about different types of camouflage and see how the art of blending in is keeping up with modern detection systems.
What are the symptoms of atrial fibrillation?
health.howstuffworks.com/diseases-conditions/cardiovascular/heart/how-atrial-fibrillation.htm
Atrial fibrillation is serious heart disease, but it's treatable if diagnosed early. Learn about EKGs, echocardiograms and other tests that detect AF symptoms.
The App That's Creating an Earthquake Early-warning Network
electronics.howstuffworks.com/cell-phone-apps/myshake-app-earthquake-warning-system.htm
The MyShake app detects vibrations and acts as an earthquake warning system. Learn more about MyShake in this HowStuffWorks Now article.
How fMRI Works
science.howstuffworks.com/fmri.htm
fMRI, or functional magnetic resonance imaging, looks at blood flow in the brain to detect areas of activity. Learn about fMRI and its invention.
10 Eccentric Homes With Hidden Passageways
home.howstuffworks.com/eccentric-home-passageway.htm
Eccentric homes with hidden passageways aren't confined to detective novels. Learn about these five eccentric homes and what makes them so weird.
What Is a Burner Phone and Are They Really Untraceable?
electronics.howstuffworks.com/burner-phones.htm
Pre-paid cell phones, aka burner phones, are a common way for people to make calls and text anonymously, but can burners really escape detection?
Dogs Are Being Trained to Sniff Out Coronavirus in Humans
animals.howstuffworks.com/animal-facts/dogs-sniff-out-coronavirus.htm
Dogs have been trained to sniff out everything from burglars to bombs. Now a group of researchers is hoping some canines can detect coronavirus, too.