to tom tract of the 27 was car engine, but the motor is electrically palate. a german comic a developed this detractor, prototype along with the university of to galli, and the g. i said, german development agency, that son convert a dies or tractor into an electric tractor. you see, we just replace a diesel engine with an electric motor and put the battery on top of that. and there you see the swapping desk, you see the 2nd battery on, on this desk. and when you come in here you can move forth and back down. then with that you can release the battery and show it back and put the full battery on the truckload sofa can then resume working. the batteries are charged using solar energy. solar electricity isn't just clean. it can also be used off great. only half of one days actually connected to the grid, burnett, mackenzie, queen, and his team from the diversity for one day, a working on making the batteries more robust so that the tractor consume go to work on the dusty sunbaked fields. rhonda needs it for other quarter mechanization to beat user friendly. busy because of, for reducing the in depletion, fatherly it to maximize the productivity. agricultural pro

a gentleman call make a developed this e tractor prototype along with the university of to galli. and the g. i said german development agency, that son converted thighs of tractor into an electric tractor. you see, we just replace a diesel engine with an electric motor and put the battery on top of that. hello there, you've see the swapping desk. you see the 2nd battery on, on this desk. and when you come in here, you can move forth and back down then with that to can release a battery and show it back and put the full battery on the truck route. so if we can then resume working, the batteries are charged using solar energy. solar electricity isn't just clean. it can also be used off great. only half of one days actually connected to the grid . burnett. my and the queen and his team from did this just for one day and working on making the batteries more robust so that detractor can soon go to work on the dusty sunbaked fields. rhonda needs it, tucked up for other quarter mechanization to beat user friendly because of for reducing the depletion. fatherly it to maximize the producti

a gentleman call make a developed this detractor. prototype along with the university of to galli. and the g. i said german development agency. it's on converted thighs of tractor into an electric tractor. you see, we just replace a diesel engine with an electric motor and put the battery on top of that. and now they're, you've see the swapping desk. you see the 2nd battery on, on this desk. and when you come in here, you can move forth and back down. then with that you can release a battery and show it back and put the full battery on the truck route. so for can then resume working. the batteries are charged using solar energy, solar electricity isn't just clean. it can also be used off great. only half of one days actually connected to the grid, burnett, mackenzie, queen, and his team from the diversity for one day and working on making the batteries more robust so that the tractor consume go to work on the dusty sunbaked fields. rhonda needs it, tucked up for other quarter mechanization to beat user friendly because of for reducing their in their depletion. fatherly it to maximi

a german comic a developed this e tract, a prototype along with the university of to galli, and the g. i said german development agency at sun convert a diesel truck into an electric truck. toys, see, we just replace the diesel engine with an electric motor and put the battery on top of that. and there you see the swapping desk, you see the 2nd battery on, on this desk. and when you come in here, you can move forth and back down. then with that you can release the battery and show it back and put the full battery on the truck road. so if we can then resume working, the batteries are charged using solar energy. solar electricity isn't just clean. it can also be used off great. only half of one days actually connected to the grid, burnett, mackenzie, queen, and his team from the diversity for one day. a working on making the batteries more robust so that the tractor consume go to work on the dusty sunbaked fields. rhonda needs it, tucked up for other quarter mechanization to beat user friendly because of for reducing the a depletion. fatherly it to re maximize the productivity. agricult

to terms with both the history and potential of the museum. >> what stories do museums tell us and what should they tell us? one answer comes at the redesigned africa gallies at the universityia museum of archaeology and anthropology known as the penn museum. the lead curator shared how -- the lead curator. >> how do weake that conversation and transform the narrative, sees this moment to transform this museum, the rratives in the museum and the service we can provide to the community about the national narrative, the international narrative, about the narrative of humanity? >> he is a professor of sociology and african studies at the university. also one of the hosts of the long-running pbs series history detectives. >> one ivory arm lit is one of the key items in our new galleries. beautiful. >> and a filmmaker. >> if we are going to tell the story of human civilization, we must reconfigure these spaces to speak to various audiences in ways that remove the race bias and prejudice which are the foundation of museums everywhere. these museums were to justify empire. they were to justify the colonization. they were to justify the marginalization certain groups of people. we