Phosphine
Study / Research
Reported detection of phosphine in Venus' atmosphere as a potential biosignature; subsequent observations cast doubt and rule out clear abiotic explanations.
Mentioned in 3 videos
Videos Mentioning Phosphine

Why Life on Mars Will DOOM Humanity
PBS Space Time
Reported detection of phosphine in Venus' atmosphere as a potential biosignature; subsequent observations cast doubt and rule out clear abiotic explanations.

Clara Sousa-Silva: Searching for Signs of Life on Venus and Other Planets | Lex Fridman Podcast #195
Lex Fridman
A gas that serves as a possible sign of life on other planets, known for its toxic nature and difficult biological production, making it a strong biosignature.

David Kipping: Alien Civilizations and Habitable Worlds | Lex Fridman Podcast #355
Lex Fridman
A gas that was controversially claimed to be a biosignature in Venus's atmosphere, leading to renewed interest in Venus missions.