@misc{indiciaee89184ab89f2,
  title = {A cool early Earth?},
  author = {John W Valley},
  year = {2005},
  doi = {10.1038/scientificamerican1005-58},
  url = {https://pubmed.ncbi.nlm.nih.gov/16196254/},
  note = {Source identifier: 16196254}
}