New research suggests that bacteria containing purple pigments could be the key to locating extraterrestrial life. On Earth, the dominant colour signal for life is green, due to bacteria and ...

Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese ...

Engineered bacteria can sense environmental ... In each case, the pigment's production was tied to a genetic circuit that responds to specific stimuli, such as the presence of nearby bacterial cells.