stay i'm alex demetrick. coming up, a sudden surge in recycling.s news continues. >>> it's warmed up some after a chilly morning. meteorologist bernadette woods has your updated first warning forecast. >>> wjz 13 is always on. for the top stories right now, for instant updates and first warning weather all the time, click on wjz.com. ,,,,,, welcome to the world of lovaza, where nature meets science. if you have high cholesterol, high blood pressure or diabetes, you may also have very high triglycerides -- too much fat in the blood. it's a serious medical condition. lovaza, along with diet, effectively lowers very high triglycerides in adults but has not been shown to prevent heart attacks or strokes. lovaza starts with omega-3 fish oil that's then purified and concentrated. it's the only omega-3 medication that's fda-approved. you can't get it at a health food store. lovaza isn't right for everyone. tell your doctor if you're allergic to fish, have other medical conditions and about any medications you're taking, especially those that may increase

alex demetrick reports. it's already won invention of the year, where it was developed at the johns hopkins applied physics lab. >> reporter: you're looking at the prototype of a potential lifesaver. an automated sampling device that can quickly sniff out deadly pathogens like anthrax. >> it takes on the order of 30 minutes to identify a pathogen from let's say a white powder. >> reporter: during the anthrax attacks that killed five people in 2001, it took two days to positively identify the bacteria. too late to help some. >> if you don't administer the right treatment, within the first 24 hours. the lives of the potential victims may be in danger. >> reporter: the standard check for things like anthrax mean growing cultures in the lab and studying them under the microscope. tests that currently take 24 hours. at the hopkins applied physics lab, the sampler and its software are tied into a laser speck tromenter. -- spectometter. >> we're looking at other things that fly out of microorganisms. >> reporter: w

alex demetrick. wjz eyewitness news. >>> a car may pass only when it is safe to do so. >>> this weekend, the nation watch to see who would wear the green jacket at the masters in augusta. phil michael son overcame that dealt when he was dealing with a much bigger one, his wife's breast cancer fight. >> reporter: it is being called one of the most touching moments in golf. tonight, a cancer survivor shares her reaction to that moment. for the thousands of spectators at the masters and millions watching at home. tears felt first at this hug between a golfer and his caddy. who knew how difficult a year it had been for phil mickelson. his wife amy has been battling breast cancer, and made it to celebrate with him at the 18th. shadowing another golfing couples troubles. two time breast cancer survivor marsha oakly told me she was overcome with emotion just watching it. >> here they are with this very special moment. him just glad to have her. and crying, to see this big guy with tears rolling down his fac

. >>> i'm alex demetrick. coming up, the vatican is paying the university of maryland to take on a highly specialized form of stem cell research. that story as eyewitness news continues. >>> and a change on the horizon for our weather this weekend. don't miss the updated first warning weather forecast. it's gorgeous outside right now, though. we'll be right back. ,,,,,,,,,,,,,,,, >>> stem cell research and the vatican isn't always on the same page. but they are looking for a specific kind of study. the university of maryland will be leading that research. >> the vatican has made its stand, no research on embryonic stem cells. but like the occasional mass in english, sometimes exceptions can be made. in this case, harvest. >> to get the stem cells from the intestine of the patient. >> what they would be cable of doing is not known. researching the value of adult stem cells. >> i'm really, really pleased to be here. representing the university of school of medicine. and our stem cell center. i know very little i

. >>> i'm alex demetrick. coming up, they're big, they're bad. and they don't belong in maryland.ut they're here. that story as eyewitness news continues. >>> i'm bob turk. in the first warning weather center. a big chill and a big warmup. i'll have the exclusive first warning five-day forecast. >>> first, here's today's report from wall street. we'll be right back. ,,,,,,,,,,, >>> alex demetrick reports, they are going claw to claw with native species. 50 years ago, maryland's stream was home to maryland crayfish. three touched large numbers. they have become invasive. >> the native species disappear. from those stretches of stream where the non-natives are. >> over the past years, teams will count where the catalog is. >> native and non-native crayfish are collective. the maryland species show worrisome signs of decline. >> they're very competitive creatures by nature. and so they actually physically fight, crayfish to crayfish, for the best hiding places and food. >> and that can change the balance of life with a scream. with invaders eating more things other animals count on.

alex demetrick, wjz eyewitness news. >> tests on the hopkins invention will be conducted by the cdc, using pathogens like anthrax in a secure biohazardous lab. >>> back on earth. discovery lands in florida, as the shuttle mission comes closer to a close. >>> deadly rampage. what sparked a shooting outside a tennessee hospital. >>> i'm bob turk in the first warning weather center. midweek showers headed our way. i'll have the exclusive first warning five-day forecast. >>> and wjz 13 is always on. and here are the top stories on wjz.com. >>> for instant updates and all the day's news and the updated forecast any time, log onto wjz.com. ,,,,,,,,,,,,,, >>> we have new information tonight about a gunman who shot inside a hospital yesterday. police say the mentally ill man was upset with a doctor he thought had implanted a monitoring device inside him during an appendectomy in 2001. the shooter was identified as a naturalized citizen from ethiopia. the gunman killed a hospital worker and wounded two others before killing himself. >>> mexican authorities are reportedly expected to make an a

. >> i'm alex demetrick. coming up, tight money puts a squeeze on the bay.hat story as eyewitness news continues. >> check in for more on these stories and all the day's breaking news. eyewitness news at 5:00 starts now. >>> having to look at myself in a light that i never wanted to look at myself. that was difficult. >> reporter: tiger is back. the pro golfer makes his return to the masters. >> tonight, tiger opens about his mistakes that led to the long hiatus. >> hi, everybody. i'm kai jackson. and i'm denise koch. mary has the evening off. and here's what people are talking about. >> tiger woods is making his much-anticipated return to golf this week, months after his extramarital affairs became public. tiger says despite the scandal, nothing has changed and he's ready to win it all.

his family says yes, sir and alex demetrick has his story.an officer on routine patrol saw a man jumping up and down on a minivan. an officer used a taser to subdue a man and that didn't stop him. the man picked up something and advanced on the officer. his family saw it happen and said he never had a weapon and the officer opened fire and hit him once. it's said to be nonlife threatening. he's recovering here at shock trauma and the investigation is open and on going. don, back you. >>> a local community leader is going on trial for murder. he's accused of stalking his estranged wife and stabbing her. she was in the process of getting a restraining order when she was attacked. >>> a heart breaking situation in baltimore county. a woman was struck and killed by a car and she had a baby in her arms. s she was hit as she tried to cross the road, she later diedality shock -- at shock trauma and there's no word on the baby's condition. >>> the new ad's at the preakness has people talking. people say they're too suggestive and several say they're

. >> alex demetrick, wjz eyewitness news. >> before you go setting your watch to the tower, know that it may take several hours for all four clocks to sync up. >> so you gotta know which side. >> that's right. >>> here's a look at tonight's closing numbers from wall street. we'll be right back. >>> we'll is -- wjz is live. first warning weather coverage. bob has a more detailed look at what we can expect tomorrow. >> if you like today, you'll like tomorrow. it's kind of a mild start. maybe a little cooler in some spots. generally, upper 50s to low 60s to start out. there you go. upper 80s by the time it's all said and done. probably close to 90, i'm sure. 88 to 90. 83 and clouds. maybe scattered showers and thundershowers thursday night. lingering early friday and clearing out. 61, 60 and 69. sunshine returns for the weekend. >> still to come on eyewitness news tonight. the o's begin a new season tonight. >>> mark asks the team about the challenge ahead. that's next in sports. ,,,,,,,, you want to get a great looking lawn like this, but trying to grow grass from seed in tough areas li