When helicopters hover above central Tel Aviv, occasionally it signals something joyful: the release of hostages. After ...

Eric Weinstein worked at billionaire Peter Thiel's investment firm and made contributions to theoretical physics. Learn about his work in academia and finance.

Is it possible according to science? Explore the theories, paradoxes, and real-world concepts behind time travel.

Find Stephen Hawking Latest News, Videos & Pictures on Stephen Hawking and see latest updates, news, information from NDTV.COM. Explore more on Stephen Hawking.