herbicides all over the world toxic chemicals are used to protect crops with large quantities sprayed over theel. but could a robot do the same job without the harmful side effects. those little plants don't stand a chance they're being examined by a laser burned and killed roots and all. robot weed killers like this prototype may stalk the fields of the future. it's being developed by scientists at the university of bonn in germany. devices like this could transform the entire business of we control and crop care. day and night robots could trip for disease watch out for infestation is like insects or fungus and kill the weeds among the crops stomping is an alternative method to zapping. there's a lot of artificial intelligence behind these little models if they do their job well the use of herbicides could be slashed. in a national id as we've reached the point where we can sharply reduce the use of chemicals and that's what i'm confident it will indeed happen in the field of weed control this is just as he ended. the smart robots need to distinguish between weed in crop and between healthy an

should the senate, and this manipulation of theel process, welcomed the house to use impeachment as a political weapon whatever the merits of this case. now i've been speaking in procedure. i want to emphasize procedure matters. the history of liberty is largely been the history of thea observant of procedural. if the appropriate use of impeachment is to be preserved, procedural safeguards must be observed. moving on to charges. article two, house managers argued that the president obstructed congress for acting on the advice ofeg legal counsel to resist subpoenas. the judiciary result between the executive and legislative plant branches. the house should have had judicial remedies before bringing this charge. i shall vote against article two. in article one abuse of power, three issues must be addressed. one the legal standard of guilt by which to judge the president, to whether the president committed a crime and if so, three whether that crime warrants removal from office. first, the standard of guilt was never established. legal standards for conviction vary from the more probable

[applause] americaneekend on history tv, a lecture from the university of north carolina at theel hill on the 1960's, 1945 film to the shores we would jim a, and a look at slavery -- look at, and a slavery in the nation's capital. a white house historical association conversation on slavery in washington. >> nine of the first 12 presidents brought in slave people -- enslaved people at the white house. you are really trying to figure out what do you need to get a building going, to get a white house going? what you need for the entertainment? what they have realized is that it is slave labor that was going to provide the foundation for them to craft and create what became the white house. -- reelilamerica at america, a 1945 film telling the story of a brutal battle were 7000 marines were killed. at 8:00 p.m. on the presidency, a look at lincoln, douglas, and emancipation. explore the american story. watch american history tv this weekend on c-span three. >> tonight on q&a, we will discuss notable speakers of the house with a political science professor. >> we have come a long way from t

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fact that bernie sanders is in states like colorad and california and north carolina, so close to theel caucuses, you that everythin his campaign feels about this, which is we feel so good about nevada, we know we need to get a big bump going into those super tuesday states which hav s many delegates, a third of the delegates.ta judy: 14s. amy: 14 states, a third of the number of delegates there.nl the other person competing at that level in the super tuesday stas is michael bloomberg. judy: wh is taking flack now especially, tam, from miket bloomberg, who today tweeted and i think we have picture of this, a video, some pictures, as well. bu mike bloomberg is complaining, essentially,th abot the candidates coming after him so hard. but on top of that, as we pointed out, he's not even the ballot and yet the stories about his past, how he ran the bloomberg company has moved to the forefront of this race. tamara: right. there's a sense that there's the bernie sanders lane and then there's the "everyone else" lane and michael bloomberg hasn't been on the ballot in the first stes but has spe

. >> attorney general bill barr is raising eyebrows for selecting outside riew theel flynn.et and isll awaiting sentencing. meantime, the justice deparenina case against former fbi deputy director andrew mccabe. >> it is anthat they took two ye they finally drew the obvious conclusion. >> president trump repeatedly criticized him over his role in the russia probe and tweeted saturday that mccabe "authorized media links to advance personal interest." last week, the president praised the justice department for changing the way of handling the case against former trump associate roger stone. stone was convicted in november on multiple counts of lying to congress. prosecutors plan to ask for a 7-9 year sentence, but senior justice officials overruled the recommendation and planned to push for a shorter sentence. >> i have not discussed the roger stone case of the white house. >> democrats don't buy it and are calling for barr to step down. >> everything that bill barr is about right now is just about loyalty to donald trump. and we just can't have that. he should not be the attorney gene

one last point is the fact that and theel bands -- bans ,ontainment is still in place so we have to seeuation and if things will return to normal, those are the questions hanging on our heads right now. us outjingyi pan joining of singapore, ig singapore market strategist. thank you. coming up next, president trump's india visit seems to be linked with show events. will they be able toresolve simmering trade tensions ? that's the question. we will take a look next. this is bloomberg. ♪ this is bloomberg. ♪ haidi: this is "bloomberg markets: asia." president trump is hoping for a hero's welcome in india when he arrives on monday, but any lit see events in his state visit will paper over a growing trade friction between the nations. asia government managing editor joins us from hong kong now. thanare we expecting other a lot of pomp and ceremony? reporter: pomp and ceremony seems to be one of the major points for trump to go to india. he expects millions will line the streets. these big experts are what trump apart from that, we are not expecting too much on trade. there was a canceled tr

herbicides all over the world toxic chemicals are used to protect crops with large quantities sprayed over theel.