Editing 2000 (section)

===May===
* [[May 1]] – A new class of [[Negative index metamaterials#Physical properties never before produced in nature|composite material]] is fabricated, which has a combination of [[physical property|physical properties]] never before seen in a [[natural material|natural]] or human-made material.<ref name=comp>{{cite journal |doi=10.1103/PhysRevLett.84.4184 |pmid=10990641 |title=Composite Medium with Simultaneously Negative Permeability and Permittivity |first5=S |last5=Schultz |first4=SC |last4=Nemat-Nasser |first3=DC |last3=Vier |first2=WJ |year=2000 |last2=Padilla |last1=Smith |first1=D. R. |journal=Physical Review Letters |volume=84 |issue=18 |pages=4184–7 |bibcode=2000PhRvL..84.4184S |doi-access=free| issn=0031-9007}}</ref><ref name="UCSD-press-release">{{cite web |author=McDonald, Kim |title=UCSD Physicists Develop a New Class of Composite Material with 'Reverse' Physical Properties Never Before Seen |url=http://ucsdnews.ucsd.edu/newsrel/science/mccomposite.htm |publisher=UCSD Science and Engineering |date=March 21, 2000 |access-date=December 17, 2010 |archive-date=June 11, 2011 |archive-url=https://web.archive.org/web/20110611235821/http://ucsdnews.ucsd.edu/newsrel/science/mccomposite.htm |url-status=live }}</ref>
* [[May 4]] – The 7.6 {{M|w|link=y}} [[2000 Banggai Islands earthquake|Central Sulawesi earthquake]] affects [[Banggai regency|Banggai]], [[Indonesia]], with a maximum Mercalli intensity of VII (''Very strong''), leaving 46 dead and 264 injured.
* [[May 5]]
** After originating in the [[Philippines]], the [[ILOVEYOU]] computer virus spreads quickly throughout the world.
** A rare conjunction of seven [[celestial bodies]] (Sun, Moon, planets [[Mercury (planet)|Mercury]]–[[Saturn]]) occurs during the [[new moon]].<ref>{{cite web |url=http://nssdc.gsfc.nasa.gov/planetary/alignment.html |title=Planetary Alignment of 5 May 2000 |publisher=Nssdc.gsfc.nasa.gov |access-date=September 15, 2013 |archive-date=April 19, 2020 |archive-url=https://web.archive.org/web/20200419140559/https://nssdc.gsfc.nasa.gov/planetary/alignment.html |url-status=live }}</ref>
* [[May 11]] – India's population reaches 1&nbsp;billion.<ref>{{Cite web|url=https://news.google.com/newspapers?id=uOsSAAAAIBAJ&pg=5551,31832&dq=india+1+billion+population|title=Lakeland Ledger – Google News Archive Search}}{{Dead link|date=December 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{Cite web|url=https://news.google.com/newspapers?id=4bILAAAAIBAJ&pg=6004,4288407&dq=india+1+billion+population|title=Ludington Daily News – Google News Archive Search}}{{Dead link|date=December 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* [[May 13]]
** A [[Enschede fireworks disaster|fireworks factory disaster]] in [[Enschede]], Netherlands, kills 23.
** [[Millennium Force]] opens at [[Cedar Point]] amusement park in [[Sandusky, Ohio]] as the world's tallest and fastest roller coaster
* [[May 24]] – [[Real Madrid C.F.]] defeats [[Valencia CF]] 3–0 in the [[2000 UEFA Champions League Final|UEFA Champions League Final]] at [[Stade de France]] to win their second title between 1998 and 2002, and their eighth overall.