NFL free agency starts Monday with something of a soft launch as players on expiring deals can begin negotiating with outside teams.

The arterial vasculature is the second most frequently calcified structure in the human body after the skeleton. Calcification of the aorta and aortic valves occurs in most individuals in westernized ...

The IAEA estimates that when Israel launched its first attacks in June, Iran had 440.9 kg of 60% uranium. If enriched further ...