When a bone grows, our bodies’ proteins help provide the structure. When a muscle tears, proteins help rebuild it. When we fight an infection, transport oxygen in our blood or send messages to a cell, ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Even in the cold, airless regions between stars, cosmic dust grains can help stitch amino ...

Evidence is mounting that the same basic chemistry that made Earth habitable is unfolding, or once unfolded, on Mars. From complex organics to minerals linked with microbial activity, the Red Planet ...