Episode 2 of 'Our Better World'

Our world is facing many challenges today, from pollution to over-population. But as long as we keep searching for solutions, all's not lost. This episode of "Our Better World" recounts how Chinese and Brazilian scientists came together to eradicate golden mussels – an invasive species that has affected fish farms, reservoirs, and even hydropower plants in Brazil. It also shows how Bangladesh, a country known as the "Land of a Thousand Rivers," eased their water crisis with the building of the Padma water treatment plant.

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