AP Blue Sky Science: Why do some animals go extinct while other species regenerate? May 15, 2019 0 Facebook Twitter SMS Email Print Save Some species are simply more rare than others and don’t occur in very large numbers. But usually there is some factor that has driven a population to even greater rarity. Tags Wire Field59 Blue-sky-science More video 1:21 Meet a cuddly baby dugong named Marium Meet the perfectly preserved Ice Age wolf discovered in Siberia Blue Sky Science: How does epiglottis distinguish among food, water and air? Facebook Twitter SMS Email Print Save Load comments × Post a comment as Emoticons [smile] [beam] [wink] [sad] [cool] [innocent] [rolleyes] [whistling] [lol] [huh] [tongue] [love] [sleeping] [yawn] [unsure] [angry] [blink] [crying] [ohmy] [scared] [sleep] [sneaky] [tongue_smile] [thumbdown] [thumbup] [censored] [happybirthday] [ban] [spam] [offtopic] [batman] [ninja] [pirate] [alien] Comment Text Cancel Post comment × Your comment has been submitted. × Report Cancel Report Abuse ×Reported ×There was a problem reporting this. × Watch this discussion. Stop watching this discussion. Watch this discussion Get an email notification whenever someone contributes to the discussion Notifications from this discussion will be disabled. Cancel Start watching Stop watching (0) comments Welcome to the discussion. Log In Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language. PLEASE TURN OFF YOUR CAPS LOCK. Don't Threaten. Threats of harming another person will not be tolerated. Be Truthful. Don't knowingly lie about anyone or anything. Be Nice. No racism, sexism or any sort of -ism that is degrading to another person. Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts. Share with Us. We'd love to hear eyewitness accounts, the history behind an article. Post a comment Watch this discussion. Stop watching this discussion. Most Popular Patient’s death is a sign of deeper problems with home care in Idaho, workers say Victim of Twin Falls multi-vehicle crash dies Twin Falls crash victim faces tough recovery Driver who started Friday crash arrested on battery charge Obituary: Jedidiah "Jed" Nielsen View All Promotions promotion spotlight Who's your TV dad? promotion spotlight Could you pass a U.S. civics test?