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“Helical microtubules of graphitic carbon,” pages 56–58

Nature issued Sumio Iijima's paper under that title in volume 354, issue 6348, on 7 November 1991.

Iijima, a microscopist at NEC's Fundamental Research Laboratories in Tsukuba, Japan, reported needle-like carbon tubes produced by arc-discharge evaporation and growing at the negative end of the electrode.

Electron microscopy and electron diffraction showed that each needle contained coaxial graphitic tubes with helically arranged carbon hexagons — the structures now called multiwalled carbon nanotubes.

Two to fifty tubes nested in one needle

The needles measured a few to a few tens of nanometres across, and each held between two and about 50 graphitic walls.

Iijima had gone looking in the hard cylindrical deposit on the negative graphite electrode because the recent production of fullerenes by arc evaporation made that residue worth putting under a transmission electron microscope.

What the paper delivered was a detailed structural account of highly ordered nested graphitic tubes, tied directly to the new fullerene research program.

Why “the first report” is disputed

The publication date and contents are solid; the label is not. Peer-reviewed histories document carbon tubes imaged in 1952 by Radushkevich and Lukyanovich at roughly 50 nm diameter, hollow nanoscale carbon fibers in 1976, and further tubular-carbon work before 1991.

On that reading, Iijima's distinctive contribution was the unusually detailed structural identification and the enormous research response it drew, not an uncontested first sighting.

The 1991 structures were multiwalled. Single-walled nanotubes were reported independently in 1993 by groups at NEC and IBM.

The listing gives a year; the law gives a day

On 25 December 1991 the RSFSR Supreme Soviet adopted Law No. 2094-1, directing that the state formerly called the Russian Soviet Federative Socialist Republic be called the Russian Federation (Russia).

The law treated “Russian Federation” and “Russia” as names for the same state, and it took effect on the day it was adopted.

Boris Yeltsin signed it. The signature block already styled him President of the Russian Federation.

New name on the letterhead, old stamps still allowed

The new name was required in official acts, documents, state-symbol wording, the names of government bodies, seals, stamps and letterheads.

The old forms — “Russian Soviet Federative Socialist Republic” and “RSFSR” — could nonetheless remain in official clerical use throughout 1992 while paperwork and seals were replaced.

The law also directed that matching constitutional amendments go to the Congress of People's Deputies; those were adopted on 21 April 1992.

A rename is not an independence declaration

The law changed the state's name. It did not declare or create Russian independence, and the state was not newly created by it. The text itself carries no political preamble.

The Soviet Union still formally existed on 25 December. Its Council of Republics declared the following day that the USSR had ceased to exist.

A recognition date fixed four weeks in advance

On 15 January 1992, each of the twelve European Community member states recognized the independence of Slovenia and Croatia.

The day had been set on 16 December 1991, when EC foreign ministers invited Yugoslav republics to apply under stated democratic, human-rights, minority-rights and frontier criteria and named 15 January for implementation.

Portugal's foreign minister João de Deus Pinheiro, presiding over the EC Council of Ministers, publicly announced the twelve states' recognition of Slovenia.

The commission's two opinions did not match

The Badinter Arbitration Commission issued Opinions No. 7 and No. 5 on 11 January 1992. It concluded that Slovenia satisfied the EC criteria; on Croatia it found that constitutional minority-rights guarantees were not yet fully adequate.

The EC states went ahead with both recognitions.

Recognition is legally an act of individual states rather than of the Community, and Germany's is dated variously — sources distinguish a December decision, a December diplomatic act, and recognition taking effect on 15 January.

Not the day the breakup began

The listing has the Socialist Federal Republic of Yugoslavia beginning to break up on this date. Slovenia and Croatia had adopted independence acts in June 1991, fighting had already come and gone in Slovenia, and Badinter Opinion No. 1 had found in November 1991 that the SFRY was in the process of dissolution.

Nor was 15 January Croatia's first foreign recognition; several states had recognized it earlier. What was new was that recognition now covered the whole European Community.

By the end of the day both republics held recognition from every EC member, which did not stop the war in Croatia or complete Yugoslavia's dissolution.

The certified count

On 20 September 1992, French voters answered yes or no to a bill authorizing ratification of the Treaty on European Union.

The Constitutional Council's certified figures were 13,162,992 yes votes against 12,623,582 no — 51.04% to 48.95% of valid votes. Certified turnout was 26,695,951 voters, 69.69% of a registered electorate of 38,305,534.

On referendum night President François Mitterrand announced that it appeared certain a majority had approved the treaty.

Nobody made France hold a referendum

France was required to ratify according to its constitutional procedures, but a public vote was not mandatory. Mitterrand explicitly explained that an ordinary parliamentary law could have authorized ratification instead.

After Parliament revised the Constitution to permit ratification, he used his discretion to send the bill to the electorate.

He had announced that decision on 3 June, immediately after Denmark rejected Maastricht in its first referendum.

What the yes vote did and did not do

Voters approved a French authorization bill. They did not bring the European Union or the euro into being that night.

The Constitutional Council proclaimed the final result on 23 September, after annulments and corrections of material errors at polling places, and Law No. 92-1017 authorizing ratification was promulgated on 24 September.

The treaty still needed every signatory to finish ratifying; it entered into force on 1 November 1993.

370 electors on a plurality

American voters chose presidential electors on 3 November 1992. The resulting Electoral College allocation gave Democratic Arkansas governor Bill Clinton 370 electoral votes and incumbent Republican president George H. W. Bush 168, against the 270 needed to win.

Clinton's national popular-vote plurality was 44,909,889 — about 43.01% — ahead of Bush's 39,104,545 and independent Ross Perot's 19,742,267. Total presidential votes recorded came to 104,426,659.

Perot carried no state and received no electoral votes.

Concession in Houston, acceptance in Little Rock

That night Bush telephoned Clinton to congratulate him, conceded publicly in Houston, and promised that his administration would cooperate in a smooth transition.

Clinton delivered his victory address in Little Rock, accepting election as the incoming 42nd president; Senator Al Gore of Tennessee became vice-president-elect.

Arkansas and the District of Columbia were the only contests in which any candidate took an outright popular-vote majority.

Two familiar claims that do not hold

Perot's presence cannot simply be assumed to have cost Bush the election. Scholarly analyses dispute the spoiler claim and find that Perot drew from varied constituencies.

Nor was Gore chosen to balance the ticket. Contemporary reporting describes the pick as a deliberate rejection of traditional geographic, ideological and generational balance — another young, moderate Southerner who reinforced Clinton's own profile.

Clinton was president-elect in the conventional political sense from election night; the electors' later meetings and Congress's count supplied the formal constitutional election.

Whose signatures are on the document

On the White House South Lawn on 13 September 1993, Israeli foreign minister Shimon Peres signed the Declaration of Principles for Israel and PLO Executive Committee member Mahmoud Abbas signed for the Palestine Liberation Organization.

U.S. secretary of state Warren Christopher and Russian foreign minister Andrei Kozyrev signed as witnesses.

Israeli prime minister Yitzhak Rabin and PLO chairman Yasser Arafat endorsed the agreement publicly and shook hands with President Bill Clinton presiding. Neither man signed it.

A framework with the hard questions postponed

The declaration set up a framework for an elected Palestinian interim self-government council, Israeli withdrawal from the Gaza Strip and Jericho area, and later permanent-status negotiations.

The interim period was to run no more than five years from the Gaza and Jericho withdrawal. Permanent-status talks were to open no later than the start of that period's third year, and council elections no later than nine months after the declaration entered into force.

Borders, Jerusalem, refugees, settlements and security arrangements were explicitly deferred.

The recognition letters came four days earlier

Separate mutual-recognition letters dated 9 September cleared the way for a public ceremony: Israel recognized the PLO as representative of the Palestinian people, and the PLO recognized Israel and renounced terrorism.

Those letters followed months of initially unofficial, secret talks in Norway that had already produced the declaration. Recognition was decisive for formal, public Israel–PLO dealings and for the signing itself rather than a precondition of negotiating at all.

Nothing transferred to Palestinian governmental control on the lawn. The document was to enter into force one month after signing, and implementation agreements still had to be negotiated.

A deadline written into a treaty

The European single market formally came into force on 1 January 1993 for the European Economic Community's twelve member states.

The Single European Act had required the Community to establish its internal market over a period expiring on 31 December 1992. The launch arrived on the deadline, after adoption of nearly 280 legislative measures.

The European Commission, under president Jacques Delors, had produced the internal-market programme and monitored how member states transposed it.

What actually changed at the frontier

Fiscal controls at internal Community borders were abolished for transactions between member states, and the treatment of intra-Community goods as imports and exports for VAT purposes was replaced by a transitional system.

Routine or systematic customs formalities for goods crossing internal EEC frontiers ceased. Checks still needed for taxation and statistics shifted largely to traders' records and administrative reporting rather than border posts.

Tariffs were not what fell that morning: the EEC's customs union and the removal of internal customs duties substantially predated the single-market launch.

Why "eliminates trade barriers" overstates it

Regulatory, tax, service-sector and administrative barriers remained, and personal border controls survived — Schengen's abolition of them began later and did not cover every member state. Commission material of the period described 1 January 1993 as the beginning of a continuing process rather than an endpoint.

One number attached to the launch is routinely misread. The Commission estimated that EU GDP in 2006 was 2.2% higher than it would have been without single-market progress over 1992–2006 — a cumulative counterfactual, not 2.2% annual growth.

The European Union did not yet exist on 1 January either. The Maastricht Treaty entered into force on 1 November 1993, when the EEC became the European Community.

AGK+81°266, in focus

At about 1:00 a.m. on 18 December 1993, astronomers at the Space Telescope Science Institute crowded around a monitor to see the first image returned by the newly installed Wide Field and Planetary Camera 2.

It showed the star AGK+81°266 in clear focus, free of the artifacts caused by Hubble's spherical aberration, and the room cheered.

Christopher Burrows held back his own celebration until he had examined the image closely. After that, the repair team knew the optical correction had worked.

Which instrument fixed what

STS-61 had replaced the original camera with WFPC2, which carried corrective optics inside the camera, and installed COSTAR to redirect corrected light to several other instruments. COSTAR did not correct WFPC2.

Once Endeavour released the telescope, controllers began commissioning and testing the repaired observatory; the flawed primary mirror they were compensating for measures 2.4 meters across.

The 18 December frame was the team's direct evidence that WFPC2 was compensating for the mirror error.

Which "first corrected image" the listing means

The listing gives only a year, and the milestone it names is not a single moment. 18 December was the first WFPC2 image the repair team saw; COSTAR's mirrors were deployed on 28 December; the widely reproduced corrected image of the galaxy M100 was taken on 31 December.

So the famous M100 comparison was not the first successful corrected exposure. The initial test target was a star.

NASA kept the result quiet while testing continued and released the first repaired-Hubble image set publicly on 13 January 1994.

A weekend of fighting for the capital

On 4 July 1994, Rwandan Patriotic Front forces took full military control of Kigali after a weekend of intense fighting with government forces.

RPF troops captured key state and military sites, including the Ministry of Defense and army headquarters, along with church compounds that had been inside government-held territory.

The defeat pushed the remaining Rwandan Armed Forces out of the capital and into a retreat toward their positions in the northwest.

What was left in Kigali to lose

The interim government had moved out to Gitarama on 12 April, so what fell on 4 July was its last military hold on the city rather than its first departure from it.

Government fighting capacity had been crumbling since late June. With ceasefire talks stalled, the RPF pressed its offensive to take the capital and the government forces' rear areas.

UN officials reported the fall of the capital while UNAMIR continued its efforts to obtain a ceasefire.

The war ran on for another fortnight

The RPF took Butare on 5 July and pushed on toward Ruhengeri and Gisenyi. The United Nations dates the effective end of the civil war to the RPF's unilateral ceasefire on 18 July.

Holding Kigali was not holding Rwanda. Government forces still held territory in the northwest, and the French-led Operation Turquoise occupied a zone in the southwest.

Paul Kagame commanded the RPF campaign but did not become head of state on 4 July: a broad-based Government of National Unity was formed on 19 July, with Pasteur Bizimungu as president and Kagame as vice-president and defense minister.

Three decisions at the seventeenth plenary

On 11 May 1995, at the seventeenth plenary meeting of the NPT Review and Extension Conference at UN Headquarters in New York, participating states adopted three decisions proposed by conference president Jayantha Dhanapala without a vote.

Decision 3 declared that, because a majority existed among NPT states parties for indefinite extension, the treaty would continue in force indefinitely.

Representatives of 175 states parties took part in the conference.

What the extension traveled with

Article X(2) had required a conference 25 years after the treaty entered into force to decide whether it would continue indefinitely or for one or more fixed periods. Diplomacy produced a package that could be adopted without a divisive recorded vote.

Alongside the extension, the conference strengthened the treaty-review process and set out principles and objectives for non-proliferation and disarmament, reaffirming the International Atomic Energy Agency's verification role.

A resolution on the Middle East was adopted without a vote as part of the same compromise.

What "consensus" hides

Adopted without a vote is not the same as a recorded unanimous vote. No roll-call tally exists showing that every participating state affirmatively supported indefinite extension; the conference established that a majority favored it and chose not to test that majority in a ballot.

The official decision says the treaty shall continue indefinitely. It does not say "without conditions" — it expressly emphasizes the two companion decisions.

On 12 May, the day after making the treaty permanent, the conference failed to agree on a final declaration reviewing how well the treaty had worked.

After the rally, behind the municipal building

On 4 November 1995, Prime Minister and Defense Minister Yitzhak Rabin attended a mass rally under the slogan “Yes to Peace—No to Violence” in Kings of Israel Square, Tel Aviv.

He addressed the crowd, joined other participants in singing “Shir LaShalom,” then left by the rear of the municipal building and walked toward his waiting car.

The shooting happened there, in the parking area — not while he was speaking onstage.

Three shots, two of them into Rabin

Yigal Amir approached from behind and fired three pistol shots. Two struck Rabin; the third hit his bodyguard, Yoram Rubin. Security personnel seized Amir immediately.

Rabin reached nearby Ichilov Hospital in under two minutes by the Shamgar Commission's account, but attempts to save him failed. His chief of staff, Eitan Haber, announced the death outside the hospital at 11:14 p.m.

Within hours an emergency cabinet meeting named Foreign Minister Shimon Peres acting prime minister.

A parking area the inquiry found uncleared

Amir had planned the killing to stop Rabin's peace policy and the Oslo process. The subsequent official inquiry found that inadequate coordination and failures in securing the parking area let him wait near the prime minister's car and approach from behind.

He was later convicted of murder and sentenced to life imprisonment plus six years for wounding the bodyguard.

Peres served first as acting prime minister and formed a new government on 22 November; mourners gathered in the square, which was renamed Rabin Square.

Eleven judges, one conclusion

On 6 June 1995 South Africa's 11-member Constitutional Court handed down its unanimous judgment in S v Makwanyane and Another, holding capital punishment unconstitutional under the 1993 Interim Constitution.

The principal judgment held that execution destroys the protected right to life, annihilates human dignity, involves arbitrariness, and is a cruel, inhuman and degrading punishment. Several judges agreed on the outcome while supplying separate reasons.

Its author, Arthur Chaskalson, was styled President of the Constitutional Court in 1995; he became Chief Justice later.

What the order actually struck out

The Court invalidated paragraphs (a), (c), (d), (e) and (f) of section 277(1) of the Criminal Procedure Act, together with corresponding capital-punishment provisions applying elsewhere in the national territory — not the murder paragraph alone.

The order forbade the state and all its organs from executing anyone already sentenced under the invalidated provisions. Those prisoners were to remain in custody until their death sentences were lawfully set aside and replaced.

Chaskalson recorded more than 300 people then under sentence of death, possibly as many as 400 once the former Transkei, Bophuthatswana and Venda were counted. Of 243 death sentences imposed after the 1990 amendment to section 277, 143 had been confirmed by the Appellate Division.

Why a court had to settle it

The Appellate Division referred the constitutional question because the Interim Constitution protected life, dignity and freedom from cruel, inhuman or degrading punishment without saying expressly whether capital punishment remained permissible.

No execution had been carried out since November 1989 and an executive moratorium was announced in March 1992, but neither amounted to legal abolition; courts went on imposing death sentences until this judgment.

Makwanyane was the Court's first case heard, though not its first judgment — S v Zuma had been decided on 5 April 1995.