2 November 2026
Japan sold ¥249.8 billion of climate transition bonds on Monday, the fifth such sale this year and the eleventh since the programme began in February 2024.
Japan remains the only national government in the world that uses the climate transition bond label for its debt.
The bonds are part of a ¥150 trillion programme running to 2033 that channels money into named emission-cutting projects.
The bid-to-cover ratio was 3.84 and the highest yield accepted was 2.2 per cent.
Most of the debt has been bought by the Bank of Japan and other domestic institutional investors.
This year's proceeds are earmarked for artificial intelligence, semiconductors, robotics and nuclear technology including fusion, with only 4 per cent going to making renewable energy a major power source.
Japan has a target of cutting greenhouse gas emissions by 60 per cent by fiscal 2035 against 2013 levels, yet it is still the world's fifth-largest carbon dioxide emitter on International Energy Agency figures.
Latest issue size:
¥249.8 billion accepted
Why it matters for exams: Japan is the only sovereign issuer of climate transition bonds, under a ¥150 trillion programme to 2033 — a named instrument and a named target an environment or economy paper can ask about.
Kerala PSCUPSC
In plain words
climate transition bond climate transition bond — Government debt whose proceeds are tied to projects that cut emissions in hard-to-abate industries.
bid-to-cover ratio bid-to-cover ratio — How many times the bids received exceed the amount of debt on offer at an auction.
28 October 2026
German Chancellor Friedrich Merz met Japanese Prime Minister Sanae Takaichi at the Prime Minister's Office in Tokyo and the two adopted two joint declarations.
One covers economic security; the other covers cooperation in cutting-edge technologies, including artificial intelligence.
They also signed a joint declaration of intent on critical raw materials and agreed to set up a high-level dialogue on artificial intelligence.
The named fields for cooperation include semiconductors, batteries, electric cars, industrial AI, robotics, pharmaceuticals and wind power, with work to widen the rare earth supply base for both car industries.
Germany plans to put two billion euros into AI and high technology by 2029, while Japan is aiming at about eighteen billion euros of private investment in these fields by 2040.
Takaichi said security in the Euro-Atlantic and the Indo-Pacific cannot be separated.
It was Merz's first visit to Japan since he took office.
Declarations adopted:
Two: economic security, advanced technology
Why it matters for exams: Two named bilateral declarations — economic security and advanced technology — plus Germany's first participation in the Keen Sword exercise: durable facts on a Japan-Germany pairing.
Kerala PSCUPSC
In plain words
rare earths rare earth elements — A group of seventeen metallic elements used in magnets, motors and electronics.
Keen Sword Keen Sword — A large joint military exercise held by Japan and the United States.
7 October 2026
The Nobel Prize in Chemistry has gone jointly to Henri B. Kagan of France and Kenso Soai of Japan.
The citation is for the discovery of non-linear effects and autocatalysis in asymmetric organic synthesis.
Each laureate takes half the prize.
Their work explains how a reaction can end up producing only one of two mirror-image forms of a molecule.
Those mirror forms are like a left and a right hand; in the proteins of living cells only one of the pair is found.
That single-handed state of life's molecules is called homochirality, and the prize-winning chemistry shows how a tiny imbalance can grow into it.
Autocatalysis means a reaction speeded up by one of its own products, so the right-handed or left-handed form makes more of itself.
The Nobel Prize in Chemistry is decided by the Royal Swedish Academy of Sciences.
Laureates:
Henri B. Kagan and Kenso Soai
Citation:
Discovery of non-linear effects and autocatalysis in asymmetric organic synthesis
Prize share:
One half each
Why it matters for exams: The Chemistry Nobel laureates and the exact citation — plus the academy that awards the chemistry prize — are standard current-affairs questions.
Kerala PSCUPSC
In plain words
homochirality homochirality — The state in which only one of two mirror-image forms of a molecule is present.
autocatalysis autocatalysis — A reaction in which one of its own products acts as the catalyst.
5 October 2026
The 222nd session of Japan's Diet began on 5 October and is set to run until 12 December, a 69-day autumn session.
Prime Minister Sanae Takaichi used her policy address to the chamber to set out the government's priorities.
She promised long-term government spending to draw in investment and strengthen the economy, under what she calls a responsible, proactive fiscal policy.
She argued that Japan is beginning to come out of nearly three decades of economic stagnation but needs more action to turn higher wages and investment into lasting growth.
A weak yen and worries about government funding hang over the plan.
The session is an extraordinary one, and the government's bills on the consumption tax and a cash benefit are the main business before it.
Japan's Diet has two houses; the upper house, the Sangiin, has been known in English as the House of Councillors and is now styled the Senate.
Session number:
222nd session of the Diet
Length:
69 days, to 12 December
Fiscal doctrine:
Responsible, proactive fiscal policy
Why it matters for exams: The numbered Diet session, its dates and the Prime Minister's named fiscal doctrine — all durable facts about Japan's legislature and government.
Kerala PSCUPSC
In plain words
Diet National Diet of Japan — Japan's two-house national legislature.
Sangiin Sangiin — The upper house of Japan's Diet, formerly rendered in English as the House of Councillors.
13 September 2026
Genta Koja, a former deputy mayor of Naha backed by the ruling Liberal Democratic Party, has won the Okinawa gubernatorial election.
He took 59 per cent of the vote and defeated the two-term incumbent, Denny Tamaki, who is 66.
The result was announced the day after the Sunday poll.
The election turned on the plan to move United States Marines out of the Futenma air base to a new facility at Henoko on Okinawa's main island.
Tamaki had opposed that relocation and his administration had pursued legal steps against it.
Koja supports the move, so more than a decade of the prefecture's opposition to the United States military build-up is expected to end.
Okinawa lies in what military planners call the first island chain, which is why its governorship carries national weight.
Prime Minister Sanae Takaichi's party had campaigned for Koja.
Winner:
Genta Koja
Vote share:
59 per cent
Incumbent defeated:
Denny Tamaki
Why it matters for exams: An election and its winner, plus the Futenma-to-Henoko base relocation that is a standing question on Japan-United States security.
Kerala PSCUPSC
In plain words
Futenma Marine Corps Air Station Futenma — A United States Marine Corps air base in Okinawa that is to be relocated to Henoko.
Background
Japan's new National Disaster Management Agency will depend on the warnings issued by the body that already watches the ground, so it is worth knowing that body.
The Japan Meteorological Agency monitors earthquakes, tsunamis and volcanic activity across a country that sits in one of the world's most active seismic and volcanic zones.
It runs an observation network of about 200 seismographs and 600 seismic intensity meters, and also takes data from more than 3,600 such meters run by local governments and by the National Research Institute for Earth Science and Disaster Resilience.
All of it feeds into the Earthquake Phenomena Observation System, known as EPOS, at the agency's headquarters in Tokyo and at the Osaka District Meteorological Observatory.
When an earthquake happens the agency announces its hypocentre, magnitude and observed seismic intensity.
If the intensity is 3 or more, a Seismic Intensity Information report goes out within a minute and a half.
The agency's own seismic intensity scale has ten degrees: 0, 1, 2, 3, 4, 5 lower, 5 upper, 6 lower, 6 upper and 7.
Intensity describes the shaking felt at a place, so it changes with distance from the epicentre and with the local geology.
Degrees on the JMA scale:
10
Highest degree:
7
JMA seismographs:
About 200
Why it matters for exams: The JMA seismic intensity scale has ten degrees up to a maximum of 7 — the detail that distinguishes intensity from magnitude in exam questions.
Kerala PSCUPSC
In plain words
EPOS Earthquake Phenomena Observation System — The system into which JMA feeds all its real-time earthquake data.
NIED National Research Institute for Earth Science and Disaster Resilience — A Japanese research institute whose seismic meters also supply JMA.
seismic intensity seismic intensity — A measure of how strongly the ground shakes at a particular place, unlike magnitude which measures the quake itself.
Background
Shuri Castle's rebuilt main hall is being prepared to open to the public this month, seven years after a fire destroyed it, so the heritage property it belongs to is worth knowing.
The castle stands in Naha, in Okinawa Prefecture, and was the palace of the Kingdom of Ryukyu.
It is one component of the UNESCO World Heritage property called Gusuku Sites and Related Properties of the Kingdom of Ryukyu.
That property has nine component parts: the Nakijin Castle ruins, Zakimi Castle, Katsuren Castle, Nakagusuku Castle, Shuri Castle, Sonohyan-Utaki Ishimon, Tamaudun, Shikinaen and Seifa-Utaki.
A gusuku is a stone-walled castle of the Ryukyu islands, and the related properties include royal tombs, a sacred gate and a garden.
The fire broke out in the small hours of 31 October 2019 and destroyed nine buildings, including the main hall, before it was put out about eleven hours later.
Restoration of the main hall began in November 2022 and was completed in September, at an estimated total cost of some twelve billion yen.
A state-hosted ceremony will mark the completion on 22 November, with the hall open to visitors from the following day.
World Heritage property:
Gusuku Sites and Related Properties of the Kingdom of Ryukyu
Component parts:
Nine
Restoration cost:
About ¥12 billion
Why it matters for exams: Shuri Castle belongs to the World Heritage property Gusuku Sites and Related Properties of the Kingdom of Ryukyu, in Okinawa — a named UNESCO listing with nine components.
Kerala PSCUPSC
In plain words
gusuku gusuku — A stone-walled castle of the Ryukyu islands.
UNESCO United Nations Educational, Scientific and Cultural Organization — The United Nations agency that keeps the World Heritage List.
Background
With the 222nd session of the Diet sitting and the consumption tax bills before it, the shape of Japan's legislature is worth setting out.
The National Diet is described as the highest organ of state power and the only law-making organ of the State.
It has two houses, and the upper house is the House of Councillors, called the Sangiin in Japanese.
That house deliberates bills, budgets and treaties, investigates national questions and takes part in exchanges with parliaments abroad.
Unlike the lower house it cannot be dissolved, and its members hold six-year terms.
Being free of dissolution is what lets it take the long view on policy, by its own account.
It describes its mission as that of a chamber of wisdom and a chamber of reconsideration.
Its presiding officer carries the title of President of the House of Councillors.
Houses in the Diet:
Two
Upper house:
House of Councillors (Sangiin)
Term of a member:
Six years
Why it matters for exams: Japan's bicameral Diet, the undissolvable upper house and its six-year terms are standard comparative-polity facts.
Kerala PSCUPSC
In plain words
Diet Law Diet Law — The statute that governs how Japan's Diet works.
Sangiin Sangiin — The upper house of Japan's Diet.