Four 2015 inventions that will blow your mind. Luggage of the future; Two way radio dog collars with GPS; Innovative chips for wireless earphones and: A new revolutionary medical stetoscope that can collect vital information for patient's health and future research.

When Falcon Heavy lifted off, it would have been the most powerful operational rocket in the world by a factor of two. With the ability to lift into orbit nearly 64 metric tons (141,000 lb)---a mass greater than a 737 jetliner loaded with passengers, crew, luggage and fuel--Falcon Heavy can lift mor...