Credit: Kristian Bartolin, deputy head of counterterrorism for the Council of Europe, says this signals that another wave of attacks may be coming.

ISIS trains returning European sleeper cell operatives in clandestine camp

Powerball, Mega Millions both top $300 million

Watch: Raccoon stuck in a jam with head in peanut butter jar

Marine mammal used in pioneering research back in limelight

Activists call for whale refuges, but can they stay afloat?

‘Dad vs. Daughter’ duo livestream road trip, raise funds for St. Jude