If nonliving materials can produce rich, organized mixtures of organic molecules, then the traditional signs we use to ...

For more than a century, fossils meant bones, shells and the occasional imprint of a leaf. Now, a wave of research is showing that the most revealing relics of ancient organisms are not their shapes ...

Organic molecules — compounds that on Earth can be linked with life — encased within Martian meteorites now reveal biological activity on the Red Planet could not have formed these materials, ...

In patients with severe osteoarthritis, cartilage can wear so thin that joints essentially transform into bone on bone — without a cushion between. A new therapy that uses synthetic nanofibers to ...

Northwestern University researchers almost three years ago introduced an injectable new therapy, which harnessed fast-moving “dancing molecules,” to repair tissues and reverse paralysis after severe ...