Giving aliens directions to Earth might be tricky, but scientists have some ideas for how to do it.
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Reference Photosynthesis is the process used by plants, algae and certain bacteria to turn sunlight, carbon dioxide and water into food (sugars) and oxygen.
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An investigation into a recent collision involving a nuclear-powered U.S. submarine has revealed it hit an unmapped seamount in the South China Sea.
Lord Martin Rees argues that if humans do find intelligent alien life, it will be artificial not biological.
Reference The term transgender describes people whose gender identity differs from the sex to which they were assigned at birth.
Culture is the characteristics and knowledge of a particular group of people, encompassing language, religion, cuisine, social habits, music and arts.
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