TechnologyCouples collide with fewer people on walks than pairs of friends do An analysis of over 800 hours of footage from busy pedestrian areas in Japan found that pairs of people that share stronger social bonds are less likely to physically bump into other people walking News
PhysicsWhy symmetry is so fundamental to our understanding of the universe The symmetries of matter are deeper and stranger than they first appear, and they have driven many of the biggest breakthroughs in particle physics. But have we exhausted their usefulness? Features