Today on CNN 10, we cover the Supreme Court’s review of US laws governing social media companies and the implications for freedom of speech online. Then, CNN’s Jake Tapper examines Los Angeles' housing program aimed at tackling a homelessness crisis in the second-largest US city. Next, would you live like a “Martian” for a NASA experiment? Check out what is required of potential volunteers. And finally, we head to a southwest England town where thousands were evacuated after the discovery of a World War II-era bomb.