Physicists Say They Know How Cold Fusion Works -- and other science news of the week

This is our weekly compilation of science news.

00:00 - Physicists Say They Know How Cold Fusion Works
5:57 - Climate Engineering Is Coming, But Not Like You Think.
11:39 - Physicists Claim This $2 Billion Experiment Can Tell Us Why We Exist
17:16 - New Study Finds Alien Life Must Be Similar To Us