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Highlights in this week’s Science wrap:
United States President Barack Obama believes climate change is the one issue that will define the contours of the 21st century.
National air quality officer Thuli Mdluli says air quality within the boundaries of the Ekurhuleni Metro Municipality is the worst in South Africa.
Wits University students have showcased their solar car on campus in Braamfontein, Johannesburg.
Meanwhile, a Space Exploration Technologies cargo ship carrying an experimental 3-D printer and a habitat with 20 mice arrived at the International Space Station on Tuesday, ending a two-day journey.
Click below to watch the full wrap.
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