WASHINGTON — The defense bill that President Donald Trump signed into law puts an end to many military experiments on cats and dogs and declares a ceasefire to shooting animals in “trauma” exercises.

Indian immigrants in the United States have found success, and unexpected hostility.Credit...Miraj Patel for The New York Times Supported by By Lydia Polgreen Opinion Columnist, reporting from Sugar ...

Scientists in China have performed an experiment first proposed by Albert Einstein almost a century ago when he sought to disprove the quantum mechanical principle of complementarity put forth by ...

Classical and quantum mechanics don’t really get along as the science of the subatomic can get, well, weird. Take, for instance, quantum entanglement, which says that the state of one particle can be ...