When used as fuel the molten salt is dissolved with fissile material. A fissile material is defined as one which is capable of fission (a reaction in which the nucleus of an atom splits into two to ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. We have discovered the oldest meteorite impact crater on Earth, in the ...

Researchers say they have found "unequivocal evidence" that a meteorite smashed into Earth 3.47 billion years ago, potentially affecting plate tectonics and creating conditions for life.

The authors say findings could provide a new line of study into Earth's history and the early origins of life on the planet. What could be the world's oldest-known impact crater has been ...