Roman concrete is famous for its durability, lasting for thousands of years and seemingly stronger with each passing year. New research has uncovered the chemical processes responsible for the sturdiness of this ancient building material -- a finding that could inspire modern engineers to revive this forgotten technique.
Tagged With mineralogy
If we ever get proof of past life on Mars, it will come in the form of biosignatures, fingerprints that could only have been left by living organisms. We're a long way from finding that smoking gun evidence, but an analysis of silica minerals discovered by NASA's Spirit rover pushes us one step closer. Because of their similarity to silica deposits shaped by microbial life on Earth, these intriguing Martian minerals are now being called a "potential biosignature".