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The US and the World – level 1
25-09-2019 15:00
American leaders have different opinions on what the USA...The US and the World – level 2
25-09-2019 15:00
American leaders feel differently about how the US participates...The US and the World – level 3
25-09-2019 15:00
American leaders have different opinions on how the US...New Planet with Water – level 1
23-09-2019 07:00
Scientists find water on a distant exoplanet. The planet...New Planet with Water – level 2
23-09-2019 07:00
Scientists discovered water vapor in the atmosphere of a...New Planet with Water – level 3
23-09-2019 07:00
Scientists studying data from the Hubble Space Telescope discovered...