Expert discusses the traffic impacts of Uber, Lyft

When John Zimmer took a city planning course in college, he had an epiphany: We've built our communities entirely around cars. As a result, we have more traffic and pollution and fewer green spaces, sidewalks and parks. Determined ...

Chemical hydrogen storage system

Hydrogen is a highly attractive, but also highly explosive energy carrier, which requires safe, lightweight and cheap storage as well as transportation systems. Scientists at the Weizmann Institute of Science, Israel, have ...

page 7 from 19