What to know now:

1. Nevada caucuses, part 2: Republicans will be gathering to caucus today in Nevada with GOP  front-runner Donald Trump atop the polls there. If he wins the 30 delegates, it would be the  third consecutive win. Florida Sen. Marco Rubio and Texas Sen. Ted Cruz are in second and third place in recent poling in the state. Wondering how the caucus works? Click here to find out.

2. Speaking of Donald Trump: Donald Trump told a crowd in Las Vegas that he would like to punch a man who disrupted the campaign stop Monday night. "I'd like to punch him in the face," Trump said. "He's smiling, having a good time." Trump went on to say the man was "nasty as hell, " and that "In the old days protesters would be "carried out on stretchers." "We're not allowed to push back anymore," Trump said.

3. You're fired: Ted Cruz has fired on of his top aides after the man released a misleading video that attacked rival Marco Rubio. Cruz's communications director, Rick Tyler, was fired Monday after he acknowledged sharing a video that supposedly showed Rubio telling a campaign worker that the Bible didn't provide answers to life's questions.

4. In court: A Michigan man accused of killing six people as he drove around the city of Kalamazoo, Mich., Saturday night, had  his first appearance  in court Monday. Jason Dalton a driver for the car service Uber, is charged with murder and assault after allegedly shooting eight people while he was picking up and dropping off customers.

5. Starbucks customers aren't happy: Starbucks announced Monday that come April customers in its loyalty program will no longer be getting one reward star per visit to the coffee store, but two stars for every dollar spent. That should have made customers happy, instead, they have taken to social media to complain that  while  you will get more stars per visit,  the number of stars required to reach "gold" status and get perks has soared. Where you once reached gold status at 30 stars, it will now take 300 stars to win the gold.

https://twitter.com/HuffingtonPost/status/700825624676581376

And one more

The chancellor of the University of Wisconsin-Whitewater has backed off of comments she made after a photo of two students with something dark smeared on their face was posted on Snapchat. Chancellor Beverly Kopper, condemned the photo after it surfaced last week, saying in a letter to students, "Last night a disturbing racist post that was made to social media was brought to my attention. This post was hurtful and destructive to our campus community. While social media can certainly bring about positive change, it can also be a place that deeply hurts and harms others." As it turns out, the two students had took a photo of  themselves in the midst of a facial, wearing a skin treatment mask.

In case you missed it

A  clip from "NASA's Unexplained Files" and the "other worldly" music Apollo 10 astronauts say they heard.