A branch of the self-declared Islamic State has claimed responsibility for the suicide bombing of a Shiite mosque in eastern Saudi Arabia that has killed at least 19 people, a move that could represent a significant escalation of the extremist group's operations in the kingdom.
NPR's Leila Fadel reports from Cairo that the online statement from ISIS "named and praised the Saudi suicide bomber who detonated himself amongst a congregation of Shiite Saudis praying in a mosque in the village of al Qudaih in Qatif province."
It looks like dogs might well have been man's (and woman's) best friend for a lot longer than once thought.
The long-held conventional wisdom is that canis lupus familiaris split from wolves 11,000 to 16,000 years ago and that the divergence was helped along by Stone Age humans who wanted a fellow hunter, a sentry and a companion.
Now, DNA evidence suggests that the split between dogs and their wild ancestors occurred closer to 30,000 years ago.