From the unveiling of Kanye's new Yeezy collection to the Democratic debate and Martin Shkreli's ridiculous offer to buy The Life of Pablo, here are 10 Tweets to start the last day of the week.

After a crushing defeat in the New Hampshire Democratic primary, Hillary Clinton was all business as she took on Vermont Sen. Bernie Sanders. See the highlights and reactions.

After 10 years of pushing for land preservation, California Senator Dianne Feinstein's initiative to protect more of the California desert will become a reality. President Obama is expected to designate a total of 1.8m acres today: Castle Mountains, Sand to Snow and Mojave Trails.

During his Yeezy fashion show at Madison Square Garden, Kanye West debuted songs off his new album, including one that name-checks Taylor Swift in a rather problematic way.

Martin Shkreli, the man who made millions price-gouging an AIDS and cancer drug, then used some of the money to be the exclusive owner of Wu-Tang's most recent recording, has set his sights on Kanye West and the rapper's upcoming album.

After a meeting with international diplomats, including Russian foreign minister Sergei Lavrov, to discuss solutions to the Syrian civil war, the Secretary of State announced an agreement to end the fighting before March 1. The conflict has claimed hundreds of thousands of lives.

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