In the papal conclave to elect a new pope, here's a look at what the color of smoke (black or white) means after each vote.

Robbins also uses a retort, or still, in which, like Moll, he heats coal tar and introduces the vapors from the retort into the chamber by a gradually increasing heat, lets off the water from the ...

This is Latin for “having had mercy and choosing him” — a phrase that Francis chose as his motto when he was elevated to ...

A change in popes — through death or resignation — is a complicated process. These are the need-to-know terms — some of them ...

The death of a pope starts a centuries-old ritual involving sacred oaths by the cardinals electing a successor, the piercing ...

Navajo Nation President Buu Nygren says Donald Trump's push to revitalize coal could bring jobs, revenue and energy security.

PHNX Materials has devised a way to strip fly ash of sulfur and aluminum, impurities that concrete companies would rather ...

The president signed four executive orders to reverse the trend away from coal-fired electricity in the U.S., but there's ...

Coal use diversification has been on the agenda for the past few years, but increasing domestic coal production and supplies to the power sector had been at the core of the ministry's operations.

These vertical distances, once used to transport coal, now serve as ideal channels for energy storage with minimal additional ...