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Soldiers better protection against concussions and traumatic brain injuries. in confrontational simulations researchers from the lawrence liver moore national lab one of the government's top research facilities tested several different kinds of foam padding systems found that the spongier pads that the army currently uses do work best in military situations. they also found adding just a little extra cushion, could reduce the force of an impact to the skull by 24%. >> when you look at the accelerations cause injury just small increase in thickness can knock that acceleration down to a point wh...

Padding and prevent concussion and brain injury. one of the top research facility tested several kind of foam systems. the spongier pads do work best in military situations. but they found adding just a little bit more cushioning. just 1/8 inch more could reduce the force to the impact of the skull by 24%. >> when you look at accelerations that cause injury. a small increase in thickness can knock that down to the point to make it less severe and light injuries not happening at all. >> reporter: extra padding would require bigger, heavier helmets. even so, the findings could lead to bigger and...

Toyota vehicles the government did not find any problems that would cause the runaway accelerations which triggered the recall of millions of cars but the same sort of black, bos used in airplanes found that some gas pedals were getting stuck. this finding fueling a push to put the data recorders in all cars. steve centanni live in washington. why is the federal government now recommending those mandatory data reporters go into the car that you drive, steve? >> reporter: well, jon, ultimately they feel it would lead to saver cars. in the case of the sudden acceleration in toyotas the recorders...

Saptos says if he is not liberal enough for the democratic left, democrats will have a difficult time winning national elections. >> bret: more on this with the panel. thanks. minnesota republican congresswoman michele bachmann has until thursday to respond to inquiries from federal election officials about her campaign fundraising last year. they want itemized details for $6 million donations. bachmann's office says the high amount of individuals giving small donations is likely a factor. the transportation department says there was no electronic cause of the high-speed accelerations that...

The government says it was not an electrical problem that caused the sudden accelerations. what it means for toyota and customer confidence. plus the battle funding for abortions is front and center on capitol hill. in the next hour two separate hearings are taking place. and today's nation gut check. a texas school district wants to make learning arabic a requirement. it believes it's the language of the future, but some parents say it could turn into a lesson on islam, and they're not happy. [ male announcer ] this is lara.