Incoming asteroids may be harder to break apart than scientists previously thought, based on a study that revises our understanding of rock fracture and a new computer model to simulate asteroid collisions.
Researchers have demonstrated that a laser can transmit an audible message to a person without any type of receiver equipment. The ability to send highly targeted audio signals over the air could be used to communicate across noisy rooms, or warn individuals of a dangerous situation such as an active shooter.
In this book, Stephen Hawking leaves us with his final thoughts on the universe's biggest questions. He makes predictions on the future of humanity, including a race of "superhumans" that could emerge as people choose to upgrade themselves.