A study of ancient stromatolites reveals that ammonium reservoirs in early Earth's oceans, likely influenced by volcanic ...

Dr. Ashley Martin: "A large ammonium reservoir would have been very beneficial for early life, providing the nitrogen source ...

“The nutrient increase since eight million years ago was likely caused by increased weathering and erosion on land which would increase the delivery of phosphorus to the ocean,” said Fischer. “In ...

After hours: March 11 at 7:59:04 PM EDT Loading Chart for ASPI ...