Twitter co-founders Biz Stone and Evan Williams have announced a new project called Lift. Lift is expected to be a new application that will unlock the human potential, whatever that means. This project will be under the company Obvious Corporation, which was founded by Williams several years ago.

Biz Stone, Evan Williams and Jason Goldman, men responsible for Twitter, plan to re-start their former company The Obvious Corporation. Obvious was a company they formed prior to Twitter’s fame, and abandoned in favor of focusing on Twitter. The reborn Obvious will, in Stone’s words, “help people work together to improve the world.” What that means, exactly, is unclear, but it sounds like it will be a source of innovative products. All three have stepped back or resigned from Twitter to return focus to The Obvious Corporation. [TechCrunch]

Biz Stone recently did an interview with Howard Stern. During the interview, Stone discussed how Facebook co-founder and CEO Mark Zuckerberg proposed a buy-out for Twitter back in 2008.

Jack Dorsey is returning to Twitter as the head of product development. Evan Williams will no longer be overseeing the product development, but he will remain on the board of directors. Twitter has been looking for another exec to lead the product design of the company since Jason Goldman left.

Twitter’s VP of Product Jason Goldman is stepping down from the company. He basically needs a break from all the hard work. He made the announcement during an interview at the Le Web conference in Paris, France. However he will be around as an advisor when Twitter needs help. The discussions about him leaving started around the same time that Evan Williams stepped down as CEO. Goldman has been Twitter’s VP of Product for the last 3 years. He had worked with Biz Stone and Evan Williams on Blogger too. [Mashable]