-4. >> bsl-4. that's the big leagues. >> yes. >> many of us read books like "the hot zone", or seen "contagens", or"outbreak", it makes for great danger. how close is it? >> pretty close. as i toured the facility i had thought of some of those movies. but the reality is scientists working day in, day out, leaving strict protocol and i left with far greater confidence that something like that couldn't happen in the united states, or it won't happen soon. >> there are people looking out for us. >> very smart people looking out answers. >> that was an amazing story, showing us what it's like there. from ground zero of the pathogens to ground zero of the tornado. next? >> i got to step inside a tornado lab at university. i got to feel like beyonce, swirled around in ng investigative series... fault lines invisible hands only on al jazeera america [ ♪ music ♪ ] >>> hey, guys, welcome back to techknow, i'm phil torres, joined by dr shini somara, and lindsay moran. one of my favourite things about science

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the bsl longer will come in 12 ounce cans featuring his image and a competence.y says it is working with his family on the beer and proceeds will go to charities they support. duringate fired paterno the fallout from the jerry sandusky trial and sex abuse scandal. those of the top stories. still the come on the "bloomberg market day," adhd isn't just for kids. in the u.s., adults have overtaken children in taking prescriptions for adhd drugs. six months after the united states recession, oil industries texas may get a nice place to relocate. finance ministers relied -- arrived too late to look at alexis tsipras' proposal. we focus on the intractability. targets,with budget looking at what creditors are asking for. this year they are looking for 1% of gdp coming three years, 3.5% of gdp. we look at how greece is responded to that. by raisingt these corporate taxes on companies with net income of more than 500,000 euros. that's one thing that suggests, another is raising solidarity funds. i wanted to look next at debt relief. this is something that creditors have b