Quartz crystals are difficult to knap due to size, hardness, and crystalline structure, making them a “low-quality” raw material. However, the Clovis people of North America sometimes made points and… [+6261 chars]Read More
Mars Perseverance rover data suggests presence of past microbial life Physorg
A new study co-authored by Texas A&M University geologist Dr. Michael Tice has revealed potential chemical signatures of ancient Martian microbial life in rocks examined by NASA's Perseverance rover.
