What’s the Cosmic Microwave Background?
The universe’s oldest light is one of the great pieces of evidence for the Big Bang.
Ladies and Gentlemen, We Have a Winner
Kai Sander’s photograph of a snowy cornfield was the audience favorite in SciFri’s Winter Nature Photo Contest.
Estimate Pi by Dropping Sticks
A simulator based on one of the oldest problems in geometrical probability approximates pi.
Dispatches from SXSW Interactive 2014
SciFri is in Austin to check out the latest in innovation.
How Scientists Are Learning to Read Our Minds
An excerpt from “The Future of the Mind.”
Utah’s Winter Haze a Pollution Problem
The Salt Lake Valley’s topography lends itself to a natural phenomenon called an inversion, which traps air pollution.
How to Make an Artificial Muscle Out of Fishing Line
You’ll need fiber, some weights, a motor, and a heat gun to get you started.
Pick the Winner of SciFri’s Winter Nature Photo Contest
Time to choose your favorite winter snapshot out of our 10 finalists.
A Beer Bottle Prank Is A Lesson In Fluid Mechanics
Scientists used a high speed camera to study how tiny carbon dioxide bubbles in beer rapidly expand and rise.
For Privacy, Teens Use Encoded Messages Online
This excerpt from “It’s Complicated” explores how advances in technology afford teens new ways of communicating secretively.