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their final stops in iowa, talking policy and connecting with voters. but the candidates are also targeting each other. donald trump and ron desantis seem to be pivoting attacks toward someone who appears to be climbing in the polls. >> sandra: and that someone is nikki haley. she's been barnstorming through iowa today, and she will take a stop right there and join us live in moments. first, though, we have fox team coverage for you. lucas tomlinson is live in pennsylvania ahead of president biden's first campaign speech of the year and mark meredith will kick us off from the latest ...

happy friday. the chief of ai tested operation of the u.s. air force involved the coming cutting-edge systems. originally claimed that a drone turned against his human operator during its trust missing. theoretically curing the operator in order to accomplish his regular objective. but now, they're offering some clarity on that story. >> dana: he denies that there is an actual simulation is just an imaginary thought experiment but he says despite this being a hypothetical example, this illustrates the real-world challenges posed by ai pilot capability. with more on this from spot's b...

courted 95% of the market for machine learning. now, over the past 12 months, nvidia's share price has more than doubled. investors are betting the company will be able to profit from its foresight in developing chips that are easily adaptable. and, of course, ai is the next hot thing in tech and certainly an area with a lot of growth potential. but now, there are questions about whether nvidia's ability to keep up with demand, especially as other chip makers like intel and amd, try to get in the game. so mirror with the latest with nvidia's flirtation with the trillion dollar club. ...

on the prize, that passing this bill, getting it to the president avoids the catastrophic thing that would hurt millions of americans. and there's a reason world leaders were worried about this. this would have impacted the global economy. something that did rally wall street though today was the chip—maker nvidia. for about five minutes it was part of the elite club of us companies worth a trillion dollars. the company's share price shot past $412 on tuesday, having risen by more than 30% since last week. other companies part of the trillion dollar club are apple, amazon and alpha...

i think this bill shows that that assessment was correct. and we have to keep our eye on the prize, that passing this bill, getting it to the president avoids the catastrophic thing that would hurt millions of americans. and there's a reason world leaders were worried about this. this would have impacted the global economy. something that did rally wall street though today was the chip—maker nvidia. for about five minutes it was part of the elite club of us companies worth a trillion dollars. the company's share price shot past $412 on tuesday, having risen by more than 30% since l...