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.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.


Online Content Director: Suzanne LaBarre | Email
Senior Editor: Paul Adams | Email
Associate Editor: Dan Nosowitz | Email
Assistant Editor: Colin Lecher | Email
Assistant Editor: Rose Pastore | Email
Contributing Writers:
Rebecca Boyle | Email
Kelsey D. Atherton | Email
Francie Diep | Email
Shaunacy Ferro | Email
well that explains it. disregard my earlier unhappy comment. :)
God Bless