Mae '''Haven Coleman''' (g. 29 Mawrth 2006<ref name="CNN Climate Meet the 12 year old">{{Cite news|last=CNN|first=Harmeet Kaur|title=She's 12 and she's trying to save the world by skipping school|url=https://edition.cnn.com/2019/03/14/health/haven-coleman-climate-strike-qa-trnd/index.html|access-date=10 September 2020|work=CNN|publisher=Cable News Network|date=15 March 2019}}</ref>) yn [[ymgyrchydd hinsawdd]] ac amgylcheddol Americanaidd.<ref>{{Cite web|last=|first=|date=14 March 2019|title=Skipping School Around The World To Push For Action On Climate Change|url=https://www.npr.org/2019/03/14/703461293/skipping-school-to-protest-climate-change|archiveurl=|archivedate=|access-date=2020-09-10|website=NPR.org|language=en|ref=NPR}}</ref> Hi yw cyd-sylfaenydd a chyfarwyddwr cydweithredol Streic Hinsawdd Ieuenctid UDA;<ref>{{Cite web|last=|first=|date=2019-06-14|title=19 youth climate activists you should be following on social media|url=https://www.earthday.org/19-youth-climate-activists-you-should-follow-on-social-media/|archiveurl=|archivedate=|access-date=2020-09-10|website=Earth Day|language=en|ref=19 Activists}}</ref> mae'r sefydliad dielw ynyma'n ymroddedig i godi ymwybyddiaeth a mynnu gweithredu ynghylchdros yr argyfwng [[Newid hinsawdd|newid hinsawdd.]].<ref name="The Climate Reality Project">{{Cite news|title=Climate Reality Leader Haven Coleman Talks Today's Youth Climate Strike|url=https://www.climaterealityproject.org/blog/climate-reality-leader-haven-coleman-talks-today-youth-climate-strike|access-date=10 September 2020|work=Climate Reality|publisher=The Climate Reality Project|date=15 March 2019|language=en}}</ref> Fe’i sefydlodd ynghyd a'r ymgyrchwyr ifanc, [[Alexandria Villaseñor]] ac [[Isra Hirsi]].<ref>{{Cite web|last=Nardino|first=Meredith|date=|title=Meet the 13-Year-Old Organizer of the US Youth Climate Strike|url=https://www.dosomething.org/us/articles/haven-coleman-q-a|archiveurl=|archivedate=|access-date=2020-09-10|website=DoSomething.org|language=en-US|ref=Do Something}}</ref> Cyhoeddir ei hysgrifau ym Mwletin y Gwyddonwyr Atomig.<ref name="Bulletin">{{Cite web|title=Haven Coleman|url=https://thebulletin.org/biography/haven-coleman/|website=Bulletin of the Atomic Scientists|publisher=Bulletin of the Atomic Scientists|access-date=10 SeptemberMedi 2020}}</ref>
Mae Haven Coleman wedi'iyn lleoli ynbywyn [[Denver, Colorado|Denver]], Colorado<ref name="CNN Climate Meet the 12 year old">{{Cite news|last=CNN|first=Harmeet Kaur|title=She's 12 and she's trying to save the world by skipping school|url=https://edition.cnn.com/2019/03/14/health/haven-coleman-climate-strike-qa-trnd/index.html|access-date=10 September 2020|work=CNN|publisher=Cable News Network|date=15 March 2019}}</ref> ac mae'n fyfyriwr yn Ysgol Gyhoeddus Denver.<ref name="9News Denver Teen">{{Cite news|last=Eastman|first=Katie|title=A Denver teen goes on strike for the climate every Friday – and this week, she will march with Greta Thunberg in NYC|url=https://www.9news.com/article/news/teenactiviststrikingforclimate/73-3abd13fe-4f56-421b-8f54-2e1d6f243a6b|access-date=10 September 2020|work=KUSA.com|date=19 SeptemberMedi 2019}}</ref>
