Catching you up on overnight happenings, and what you need to know today.• Our sunny but cool streak continues today. The National Weather Service said wake-up temps in Hillsborough will be in the low to mid 40s, but by daytime it will be in the balmy 60s. But a dry cold front is moving in that will make Wednesday night-Thursday morning the coldest period of the week. Temperatures could drop to the mid to low 30s.• As you head out for your morning commute, check out our live blog for the latest traffic updates and road conditions across Tampa Bay.• Here are the top things to do today in Tampa Bay including the Kingston Trio and the play Marjorie Prime at American Stage questions the limits of technology • Thousands of students in Tampa Bay and across the nation will walk out of their classes today in memory of the 17 people who died in last month’s shooting at Marjory Stoneman Douglas High School in Parkland. The demonstrations are planned for 10 a.m. and will last 17 minutes. In the wake of the Parkland shooting, many schools have used the topic of walkouts and the rising tide of student activism as way to talk about civic engagement in their lessons. Times education reporters will be following the action today at several schools. Stay with tampabay.com for updates.• What did state lawmakers do during their two-month long legislative session? We survey the winners and losers. From the Times/Herald Tallahassee Bureau, it’s the 2018 legislative session’s what passed and what failed list..• Stephen Hawking, whose brilliant mind ranged across time and space though his body was paralyzed by amyotrophic lateral sclerosis, or ALS, has died, a family spokesman said early today. The best-known theoretical physicist of his time, Hawking wrote so lucidly of the mysteries of space, time and black holes that his book, A Brief History of Time, became an international bestseller, making him one of science’s biggest celebrities since Albert Einstein.• We’ve all been there. Hands gripping the shopping cart, crazy eyes darting up and down the shelves, every thought about how to construct an affordable and filling dinner completely gone from your brain. And then you end up spending way too much money. From our food editor, here’s 10 ideas for 4-person meals you can make for $10 or less.• After testing it in Tampa Bay, Walmart has decided to roll out its grocery delivery service nationwide. Sara DiNatale explains at tampabay.com/business that the retail giant plans to reach more than 100 metro areas — 40 percent of the country — by the end of the year.• The Lightning’s 7-4 loss to the Senators on Tuesday was weird in many ways. Forward J.T. Miller racked up his first career hat trick. Goalie Andrei Vasilevskiy got pulled for just the second time this season. Heck, even Wheel of Fortune host Pat Sajak made an appearance in the Amalie Arena press box (he has a place in Orlando). But the strangest sight? Many Lightning fans heading for the exits early in the third period. There was no drama in this one, no shootout heroics. Tampa Bay, which had won six overtime games in its last eight, got thumped in this one by a bad Ottawa (25-33-11) team. Joe Smith has the details.• Children of the 80s, Tiffany is calling. The former pop princess doesn’t play malls anymore, and three decades after her I Think We’re Alone Now success, she’s refined her act to an energetic mix of past and present. Expect less of a Casio backbeat, a bit more of a country take on her classic hits and some of her new material. Ahead of her Sunday show at the intimate Jaeb Theater at the David A. Straz Jr. Center for the Performing Arts in Tampa, Tiffany took the time to answer some questions by phone.• Courtney Stockard returned from a hamstring injury and scored 26, and Jaylen Adams made a jumper and three free throws in the final minute Tuesday night, rallying St. Bonaventure to a 65-58 victory over UCLA and its first NCAA Tournament victory in 48 years. The 11th-seeded Bonnies (26-7) will play sixth-seeded Florida (20-12) in Dallas on Thursday night in the East Region.• Get weekly cooking tips and recipes, short how-to videos and more at Stark From Scratch, a new cooking blog from Times food editor Michelle Stark.• With the holiday falling on a Saturday this year, we’ve got even more St. Patrick’s Day parties to choose from, including an Ybor parade and a river of green.