An interstellar cloud may have caused an ice age on Earth. Here's how - Space.com
- An interstellar cloud may have caused an ice age on Earth. Here's how Space.com
- A possible direct exposure of the Earth to the cold dense interstellar medium 2–3 Myr ago Nature.com
- The Solar System May Have Passed through Dense Interstellar Clouds 2 Million Years Ago, Altering Earth's Climate Boston University
- Humans emerged thanks to Earth colliding with cold clouds, study suggests The Telegraph
- Solar System Passed Through Cold Interstellar Cloud About 2 Million Years Ago, Study Suggests Sci.News