Carbon Based Lifeforms (also known as CBL) is an ambient music duo formed in 1996 in Gothenburg, Sweden by Johannes Hedberg and Daniel Segerstad (né Ringström). Hedberg and Segerstad initially formed CBL as a side project to the band Notch in 1996. As Notch, they released The Path in 1998. As time went by, CBL became their main focus. The first releases by CBL were made on the old mp3.

com in 1998. Carbon Based Lifeforms signed on with Ultimae Records in 2002.

They have released five albums (Hydroponic Garden, World of Sleepers, Interloper, VLA, Twentythree) and one EP (Irdial). CBL has always been open for collaboration with other composers and musicians.

For instance, they teamed up with Magnus Birgersson (Solar Fields) in 1999 to write the music for the Swedish dancer Olof Persson's performance "Fusion". On 27 and 28 November 2009, CBL performed live at Cosmonova, the combination ImaxDome/digital planetarium, at the Swedish Museum of Natural History, Stockholm.

Visuals for the concert were produced by Cosmonova's Astronomer/Program Producer, Tom Callen.