This week's viewer question was sent in by Arnulfo Quintanilla from El Salvador.
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Global heating might be melting the planet's glaciers and ice sheets, but can't we simply avoid rising seas and run for the hills?
The latest report by the IPCC shows the impacts of climate change on the ocean and the earth's frozen regions. Urgent action is needed, says DW's Irene Quaile: If not now, when?
The international space community has Mars fever, with three missions reaching it this month alone. Also on the show: how are water buffalo contributing to scientific research?
Atmospheric levels of planet-warming carbon dioxide have hit a record high of more than 415 parts per million. The accelerated rise of man-made greenhouse gas emissions has scientists alarmed.
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