Waves of gravity that rippled through space right after the Big Bang have been detected for the first time, in a landmark discovery that adds to our understanding of how the universe was born, US scientists said Monday. The waves were produced in a rapid growth spurt 14 billion years ago, and were predicted in Albert Einstein's nearly century-old theory of general relativity but were never found until now. The first direct evidence of cosmic inflation -- a theory that the universe expanded by 100 trillion trillion times in barely the blink of an eye -- was announced by experts at the Harvard-Smithsonian Center for Astrophysics. The detection was made with the help of a telescope called BICEP2, stationed at the South Pole, that measures the oldest light in the universe.
By Ben Klayman DETROIT (Reuters) - General Motors Co announced new recalls of 1.5 million cars on Monday and in a virtually unprecedented public admission by a GM CEO, Mary Barra acknowledged the company fell short in catching faulty ignition switches linked to 12 deaths and last month's recall of 1.6 million cars. Barra said the company is changing how it handles defect investigations and recalls. In the last two months, GM has recalled more than 3.1 million vehicles in the United States and other markets for faulty ignition switches, airbag wiring harnesses and brake parts across several models. Barra previously apologized for GM's failure to catch the faulty ignition switches sooner.