Scientists have discovered a low-cost, efficient catalyst for splitting water to create hydrogen. This means that the world's cleanest form of energy, hydrogen, may be more easily and cheaply produced.

It has been another extraordinary 24 hours in the nation’s capital. In the biggest news of the day, Deputy Attorney General Rod Rosenstein appointed former FBI Director Robert Mueller to

"Let them kill us all, if that is the death sentence for reporting this hell. No to silence." Those are the words of award-winning Mexican reporter Javier Valdez, after one of

Since 2000, more than 100 journalists have been murdered in Mexico. A recent report by the International Institute for Strategic Studies says that Mexico endured the second most conflict deaths of any