Humans emerged thanks to Earth colliding with cold clouds, study suggests - The Telegraph

1. Humans emerged thanks to Earth colliding with cold clouds, study suggests  The Telegraph
2. Cosmic cloud exposed Earth to interstellar space 3 million years ago  New Scientist
3. Astrophysicists calculate the likelihood that Earth was exposed to cold harsh interstellar clouds 2 million years ago  Phys.org
4. A possible direct exposure of the Earth to the cold dense interstellar medium 2–3 Myr ago  Nature.com
5. Interstellar Space Clouds Triggered the Ice Ages, Research Suggests  Gizmodo