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An Astronomer Solves a 70-Year-Old Ansel Adams Mystery
Donald Olson solves mysteries using celestial bodies.
SCIENCE
Why Does My Stomach Rumble When I’m Hungry?
A gurgling, rumbling stomach doesn’t always mean that you’re hungry. It just means your digestive system is trying to do its job.
Why Are the Days Longer in Summer?
Did you know that when it’s summer in North America it is winter in some other continents, like South America and Australia?
The Chemistry Behind the Smell of Rain
It's called petrichor, and a surprising amount of research has been done into the origins of the scent since it was first identified more than five decades ago.
Why Are There Shooting Stars?
Have you ever seen a flash of bright light streaking through the night sky? People around the world have different ways of explaining these so-called shooting stars.
What's Really Happening When We See 'Stars' After Rubbing Our Eyes?
Don't worry—it's perfectly normal.
10 Facts About Lithium
Lithium is used in everything from smartphone batteries to medication for bipolar disorder.
Want to Remember Your Vacation? Take Fewer Photos
New research shows that constant photography can affect your memories of the actual experience.
Watch a Caterpillar Hatch From an Egg the Size of a Pinhead
This is a side of insect life we rarely get to see.
Blind People Envision the Future Differently Than Sighted People
The way we conceptualize time is influenced by our vision.
The Dangers of Holding in Your Pee, According to Science
Why you should always answer the urge to go with the flow.
How to Watch the Chinese Space Lab Tiangong-1 Plummet to Earth
The remains could land pretty much anywhere.
This Spring, NASA Wants Your Pictures of Clouds
The snapshots will be used to verify satellite data.
Why Your Knuckles Make That Satisfying Cracking Sound, According to Science
One of life's most pressing questions, explained.
A Newly Discovered Galaxy Has a Shocking Feature—No Dark Matter
"The galaxy is a complete mystery, as everything about it is strange."
Ice Age Human Footprints in Canada Reveal a Walk on the Beach Taken 13,000 Years Ago
New evidence that early North Americans cruised the Pacific coast.
Your Rubber Ducky Is a Breeding Ground for Fungi and Bacteria
Don't let that innocent face fool you.
Part of the Amazon Thought to Be Uninhabited May Have Been Home to 1 Million People
Life in the Amazon before colonization was more bustling than previously thought.
Scientists May Have Just Discovered a New Organ—And It Could Be the Biggest Yet
They call it the interstitium.
The Answer to Dripping Ice Cream? Banana Plant Stems
Eating ice cream on a summer day could get a lot less messy.
You Can Sip Coffee and Play Games While This Helmet Scans Your Brain
For the first time, patients don't have to sit completely still.
The 'Alien' Mummy Is of Course Human—And Yet, Still Unusual
Ata has never been an alien, but she's always been an enigma.