David M. Ewalt

The new issue of @sciam looks at a cosmic conundrum that's keeping astronomers up at night: We think galaxies are held together by dark matter, because if not the stars would simply fly apart. So what's keeping together galaxies that have no dark matter? scientificamerican.com/article/galaxi…

Look how excited I am to get a sneak peek of the Public Science Common at the Boston @museumofscience! It's secret inside so no pictures, but this is going to be an incredible space for events and science education. I can't wait for many collaborations with @sciam... stay tuned!

What would the world look like if we changed the value of pi? Doomguy can tell you. scientificamerican.com/article/how-an…

One of the cool things about my job: Where else is the most-read story of the day going to be about noperthedrons? scientificamerican.com/article/mathem…

Science Quickly is now in 4th place @signalawards Listener’s Choice #signalawards. RT + VOTE: vote.signalaward.com/PublicVoting?u…

Our investigation into disappearance of Shiid-birood (“the iron rock”) reveals a journey of lies, smuggling and possibly death across the seamy world of black market collecting. scientificamerican.com/article/inside…

A new preprint study reveals that New York City’s rats aren’t just survivors—they’re talkative city dwellers with their own hidden nightlife. Mapping their movements and conversations could offer insights to transform urban planning and pest control. scientificamerican.com/article/scient…

"To know sickle cell disease is to know medicine." Dr. Wally Smith, Florence Neal Cooper Smith Professor at Virginia Commonwealth University, encourages @MSMEDU students to study the science and join Sickle Cell warriors in the fight. At #FutureOfSickleCell with @sciam

@sciam is at #±Morehouse School of Medicine getting ready a discussion on cutting-edge new treatments and the road to a cure for Sickle Cell disease. It's going to be a fascinating day, if you're in Atlanta come on by! #FutureOfSickleCell eventbrite.co.uk/e/the-future-o…

My first "From the Editor" letter at Scientific American rounds up some of the amazing stories in our 180th birthday issue, and highlights our cover story about a potential cure for food allergies! scientificamerican.com/article/180-ye…

“The dogs, because of their amazing sense of smell and detection capabilities, are demonstrating to us what technology could look like 10 to 15 years from now.” scientificamerican.com/article/pessim…

A lighting flash that spanned from East Texas to an area near Kansas City is officially the longest lightning strike ever measured. scientificamerican.com/article/lightn…

Tabletop RPGs like Dungeons & Dragons are can be powerful tools for mental health. Science Quickly spoke to researchers and dungeon master Brennan Lee Mulligan to explore how collaborative storytelling can help us thrive—and even be used as therapy. scientificamerican.com/video/why-dung…

2025 is shaping up to be a particularly bad year for tick-borne diseases in the US. Here's why, and what you can do to protect yourself. scientificamerican.com/article/why-ti…

Look up! Two meteor showers hit their peak tonight AND a third is ramping up. Here's how to watch: scientificamerican.com/article/how-to…

How complex can a simple game be? Tetris pushes even supercomputers to their limits and amazes mathematicians. scientificamerican.com/article/tetris…

Half the country will be broiling under a head dome for the next few days. Here's what science has to say about keeping your house cool and efficient: scientificamerican.com/article/how-to…

Why is it so humid today? Blame the corn. scientificamerican.com/article/humidi…

After photos showed President Trump with swollen ankles and bruised hands, the White House revealed he has chronic venous insufficiency. Here's what that means: scientificamerican.com/article/what-i…