US issues security warning, restricts government travel to Mexican border city Nogales

Scientists discovered an underwater city of 20,000 octopus nests deep inside California coast

In a remarkable finding, researchers have identified the largest nursery for octopuses off the Californian coast, aptly …

Scientists removed 70% of lake logs; yellow perch nearly vanished in 2 years

Quote of the day by Barack Obama: "Making your mark on the world is hard. If it were easy, everybody…