Ika-21 dantaon: Pagkakaiba sa mga binago

Ang '''ika-21 dantaoon''' sa '''123''' bilang ng dantaon, (taon: AD 2001 – 2100), ay ang kasalukuyang [[siglo]] ng panahong ''[[Anno Domini]]'' o Karaniwang Panahon, sang-ayon sa [[kalendaryong Gregoryano]]. Nagsimula ito noong Enero 1, Enero 2001 at magtatapos sa Disyembre 31, Disyembre 2100.<ref>{{Cite web|url=http://aa.usno.navy.mil/faq/docs/millennium.php|title=The 21st Century and the 3rd Millennium|website=aa.usno.navy.mil|language=en|access-date=2018-11-06|archive-url=https://web.archive.org/web/20191002112920/https://aa.usno.navy.mil/faq/docs/millennium.php|archive-date=2019-10-02}}</ref> Ang ika-21 dantaon ang unang dantaon sa [[ikatlong milenyo]].

Namarkahan ang simula ng ika-21 siglo ng pagbangon ng pandaigdigang [[ekonomiya]] at konsumerismo sa [[Ikatlong Mundo]], na pinalalim ang pandaigdigang pag-aalala sa [[terorismo]] at pribadong [[negosyo]].<ref>{{Cite news|title = Majority of Americans distrust the government|url = https://www.reuters.com/article/2010/04/19/us-americans-government-poll-idUSTRE63I0FB20100419|newspaper = Reuters|date = 19 Abril 19, 2010|access-date = 1 Hunyo 1, 2015|archive-date = 2015-09-24|archive-url = https://web.archive.org/web/20150924144931/http://www.reuters.com/article/2010/04/19/us-americans-government-poll-idUSTRE63I0FB20100419|url-status = dead}}</ref><ref>{{cite web|title = Rational Extremism: Understanding Terrorism in the Twenty-first Century according to Kathii Erick Gitonga |author=David A. Lake|url = https://quote.ucsd.edu/lake/files/2014/06/Rational-Extremism.pdf|website = quote.ucsd.edu|access-date = 1 Hunyo 1, 2015}}</ref><ref>{{cite web|title = Working with Private Industry {{!}} Research Pages {{!}} The Stimson Center {{!}} Pragmatic Steps for Global Security|url = http://www.stimson.org/research-pages/working-with-private-industry/|website = www.stimson.org|access-date = 1 Hunyo 1, 2015|archive-url = https://web.archive.org/web/20160203085826/http://www.stimson.org/research-pages/working-with-private-industry/|archive-date = 3 Pebrero 3, 2016|url-status = dead|language=en}}</ref> Nagpatuloy ang mga epekto ng [[pag-init ng mundo]] at pagtaas ng antas ng dagat, kasama ang pagkawala ng walong [[pulo]] sa pagitan ng 2007 at 2014.<ref>https://www.newscientist.com/article/2146594-eight-low-lying-pacific-islands-swallowed-whole-by-rising-seas/</ref><ref>https://www.scientificamerican.com/article/township-in-solomon-islands-is-1st-in-pacific-to-relocate-due-to-climate-change/</ref><ref>https://www.environment.gov.au/climate-change/adaptation/international-climate-change-adaptation-initiative/pasap/solomon-islands</ref> Nagdulot ang ''Arab Spring'' noong unang bahagi ng dekada 2010 sa magkahalong kinalabasan sa mundong Arabe, na nagresulta sa mga [[digmaang sibil]] at pagpapatalsik sa mga [[pamahalaan]].<ref>{{Cite news|title = Arab Spring yields different outcomes in Bahrain, Egypt and Libya|url = https://www.washingtonpost.com/world/arab-spring-yields-different-outcomes-in-bahrain-egypt-and-libya/2011/12/15/gIQAY6h57O_story.html|newspaper = The Washington Post|date = 20 Disyembre 20, 2011|access-date = 19 Marso 19, 2020|issn = 0190-8286|first = Marc|last = Fisher|language=en}}</ref>

Nanatili ang [[Estados Unidos]] bilang [[pinakamakapangyarihang bansa]], habang tinuturing ang [[Tsina]] na umuusbong na pinakamakapangyarihang bansa.

Nagpatuloy ang Ikatlong [[Rebolusyong Industriyal]] na nagsimula noong mga dekada 1950 hanggang sa huling bahagi ng [[ika-20 dantaon]], at nagsimula ang transisyon nito sa Industry 4.0 at ang Ikaapat na Rebolusyong Industriyal sa simula ng ika-21 dantaon.<ref>{{cite web|title = Why The Digital Revolution Is Really Just Getting Started|url = https://www.forbes.com/sites/gregsatell/2014/04/05/why-the-digital-revolution-is-really-just-getting-started/|access-date = Hunyo 1, Hunyo 2015|first = Greg|last = Satell|language=en}}</ref>

Sa paglaganap ng mga kagamitang ''mobile'' (tulad ng [[teleponong selular]]), nakakonekta sa [[internet]] ang higit sa kalahati ng populasyon ng mundo (taya noong 2018).<ref>[https://wearesocial.com/blog/2018/01/global-digital-report-2018 Digital in 2018: World's internet users pass the 4 billion mark] (sa Ingles)</ref>). Pagkatapos ng tagumpay ng ''Human Genome Project'', nagkaroon ng serbisyo ng pag-''sequence'' ng [[DNA]] at ito ay abot-kaya.<ref>{{Cite web|last=Gent|first=Edd|date=2020-03-08|title=$100 Genome Sequencing Will Yield a Treasure Trove of Genetic Data|url=https://singularityhub.com/2020/03/08/100-genome-sequencing-will-yield-a-treasure-trove-of-genetic-data-and-maybe-a-dystopian-nightmare/|access-date=2020-08-25|website=Singularity Hub|language=en-US}}</ref><ref>{{cite web|url=https://www.wired.com/story/whole-genome-sequencing-cost-200-dollars/|title=Now You Can Sequence Your Whole Genome for Just $200|first=Megan|last=Molteni|date=Nobyembre 19, Nobyembre 2018|via=www.wired.com|language=en}}</ref>

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