TY  - GEN
AU  - Keller,Christoph U
AU  - Stam,Daphne M
TI  - Planetary science: In search of biosignatures
SN  - 1476-4687
PY  - 2012///0418
KW  - Atmosphere
KW  - chemistry
KW  - Earth, Planet
KW  - Life
KW  - Sunlight
N1  - Publication Type: News; Comment
UR  - https://doi.org/10.1038/483038a
ER  -