Former MSNBC anchor and liberal firebrand Keith Olbermann will host a prime-time program for Current TV, the low-rated cable channel co-founded by Al Gore, starting in the spring.

Keith Olbermann

The as-yet untitled hour of news and commentary will effectively mimic “Countdown,” the MSNBC program that Mr. Olbermann created eight years ago and quit hosting last month. Mr. Olbermann told reporters on a conference call Tuesday that the new program would be “an improved, and we hope amplified and stronger, version of the show that I just did."