Policy
How Are the NSA and Others Collecting and Using our Data?
A metadata expert reveals the sobering implications of personal data collection by governments and companies
Ask the Experts784 articles archived since 1845
Space & Physics
If the Universe Is Expanding, Why Are the Milky Way and Andromeda Galaxies on a Collision Course? [Video]
Caleb Scharf, director of astrobiology at Columbia University, answers questions submitted to our YouTube Spacelab Channel
The Sciences
Why Twisters Hammer Tornado Alley
An interview with a severe storm scientist explains what happened in Oklahoma
Technology
Google CEO's Condition Spotlights Vocal Cord Paralysis and Its Treatment
Larry Page’s high profile sheds some light on a rare condition underserved by technology and treatment
Environment
What Role Does Climate Change Play in Tornadoes?
A climate scientist reflects on what global warming means for extreme weather
Technology
Print, Aim and Shoot: What Does a Plastic Handgun Mean for the Future of 3-D Printing?
A 3-D printing pioneer explains the technology’s capabilities and limitations in manufacturing arms
Technology
When Will Smartglasses and Other Wearable Computers Hit the Mainstream?
Intel’s Justin Rattner explains why we need new displays and graphics. Tricorders?—Not so much
Technology
Aftermath of Boston Marathon Bombing: How Do Terrorists Use Improvised Explosive Devices?
Two IEDs were detonated near the race’s finish line. An expert explains how they work and how they can lead investigators back to the bomb-makers
Space & Physics
If Photons Have Zero Mass, How Can Black Holes Pull Them In? [Video]
New York University research scientist Gabe Perez-Giz answers viewer questions submitted to our YouTube Spacelab Channel
Technology
How to Kick-Start Innovation with Free Data
Weather and GPS information stimulated the economy with new products and services. Todd Park, the U.S. chief technology officer, wants to repeat that success with the rest of the government’s data trove...
