Due to a technical issue, we're not going to activate the "price-freeze" feature on PPX until Friday, July 6. So from now until that day, trades will continue to happen in real time, with no opening-bell effect. Please make a note of the schedule change.

140 years of Popular Science at your fingertips.
Each issue has been completely reimagined for your iPad. See our amazing new vision for magazines that goes far beyond the printed page
Stay up to date on the latest news of the future of science and technology from your iPhone or Android phone with full articles, images and offline viewing
Featuring every article from the magazine and website, plus links from around the Web. Also see our PopSci DIY feed
The 6th annual Invention Awards are here, from an inflatable tourniquet to a better lobster trap to spring-loaded hocket skates. This issue is all about the celebration of invention.
Plus: Making synthetic biology breakthroughs in a garage, building a constantly-moving ping-pong table, and a ridiculously overpowered barbecue.
well that explains it. disregard my earlier unhappy comment. :)
God Bless