Science News for Kids » University of Pennsylvania http://www.sciencenewsforkids.org Publication of the Society for Science & the Public Wed, 22 May 2013 00:29:16 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 Sleeping in space http://www.sciencenewsforkids.org/2013/01/volunteers-face-problems-on-a-make-believe-mission-to-mars/ http://www.sciencenewsforkids.org/2013/01/volunteers-face-problems-on-a-make-believe-mission-to-mars/#comments Sun, 27 Jan 2013 14:00:51 +0000 Stephen Ornes http://www.sciencenewsforkids.org/?p=15445 Long space flights may harm astronauts’ sleep patterns, a 520-day experiment found. Replacing fluorescent bulbs with blue lights like the ones in this photo may help avoid those problems. Credit: ESA

Volunteers face problems on a make-believe mission to Mars ]]> Long space flights may harm astronauts’ sleep patterns, a 520-day experiment found. Replacing fluorescent bulbs with blue lights like the ones in this photo may help avoid those problems. Credit: ESA

Volunteers face problems on a make-believe mission to Mars ]]> http://www.sciencenewsforkids.org/2013/01/volunteers-face-problems-on-a-make-believe-mission-to-mars/feed/ 0 DNA hints at ancient cousins http://www.sciencenewsforkids.org/2012/08/dna-hints-at-ancient-cousins/ http://www.sciencenewsforkids.org/2012/08/dna-hints-at-ancient-cousins/#comments Fri, 17 Aug 2012 18:45:21 +0000 Roberta Kwok http://www.sciencenewsforkids.org/?p=13604 By analyzing the DNA of some modern-day Africans, scientists have found that our ancestors may have mated with an unknown, humanlike species thousands of years ago. Credit: Courtesy of Sarah Tishkoff

Scientists find evidence of an extinct humanlike species within modern-day Africans]]> By analyzing the DNA of some modern-day Africans, scientists have found that our ancestors may have mated with an unknown, humanlike species thousands of years ago. Credit: Courtesy of Sarah Tishkoff

Scientists find evidence of an extinct humanlike species within modern-day Africans]]> http://www.sciencenewsforkids.org/2012/08/dna-hints-at-ancient-cousins/feed/ 0