Archeologists uncover ancient fishhooks in Indonesia
Archeologists discovered the remains of 12,000-year-old fishhooks and other fishing artifacts in a cave on Alor Island, Indonesia.
The Encyclopedia of Science's Frontier
Archeologists discovered the remains of 12,000-year-old fishhooks and other fishing artifacts in a cave on Alor Island, Indonesia.
Nitrogen pollution is a big problem in standing water such as lakes and ponds. The nitrogen comes from many sources, often agricultural…