The emergence of our complex cosmos

Looking Beyond 2050 — On Earth and in Space with Lord Martin Rees

Amazing Astrophysics: Neil deGrasse Tyson

Martin Rees - How Many Universes Exist?

Michio Kaku with stronomer Ken Croswell discusses planets stars and black holes

Christopher Hitchens -- Speaking Honestly About Hillary Clinton

11 Strangest Things in our Solar System

Martin Rees - Why Cosmic Fine-Tuning Demands Explanation