Is there life on other planets? Have alien species already visited Earth? These and many other unanswered questions.
How much time does the human race have left on Earth? Not more than 1000 years, Stephen Hawking says. We always knew that we had a limited time to live the way that we live on this Earth. According to one of the world’s top physicists, Stephen Hawking, our societies may only have around 1000 years [...]