Skip to content
OFFER Use code on paid courses at checkout
FREE PREVIEW Week 5 3 lessons

Global Economy, Science and Technology 2025

The 2025 tariff changes and world trade, artificial intelligence milestones and rules, and major space, health and climate developments worldwide.

Lessons in this module

1

Tariffs and World Trade

Lesson • 5 quiz questions

Read notes ↓
2

Artificial Intelligence in 2025

Lesson • 5 quiz questions

Read notes ↓
3

Space, Health and Climate

Lesson • 5 quiz questions

Read notes ↓

Lesson notes

1. Tariffs and World Trade

2025 was a year of big changes in tariffs (taxes on imported goods). The United States raised tariffs on most trading partners, which led to trade talks and some temporary truces.

US 'reciprocal' tariffs

  • On 2 April 2025 the US government announced 'reciprocal' tariffs on imports from most countries. It called the day 'Liberation Day'.
  • A baseline tariff of 10% applied to most countries, with higher rates for many.
  • On 9 April 2025 the higher country-specific rates were paused for 90 days to allow negotiations; the 10% baseline stayed.
  • In August 2025 new country rates took effect. For India the total reached 50% from 27 August 2025 (see Module 2).

US–China trade

  • In April 2025 the US and China raised tariffs on each other's goods to very high levels.
  • After talks in Geneva, Switzerland, the two sides announced on 12 May 2025 that they would cut these extra tariffs sharply for 90 days.
  • The truce was later extended while talks continued.
  • These high tariffs between the world's two largest economies affected global supply chains and markets during 2025.

Companies and markets

  • On 29 October 2025 Nvidia became the first company in the world to reach a stock market value of 5 trillion US dollars, driven by demand for AI chips.
  • Many countries responded to US tariffs by signing new trade agreements with other partners. India's agreements with the UK, EFTA, Oman and New Zealand are examples.
  • The WTO Agreement on Fisheries Subsidies came into force on 15 September 2025, showing that multilateral trade rules still moved forward (see Module 3).
Quick facts
Liberation Day
2 April 2025: US reciprocal tariffs announced
Baseline tariff
10% on most countries
90-day pause
Announced 9 April 2025
US–China Geneva deal
12 May 2025: tariffs cut for 90 days
Nvidia
First company worth 5 trillion USD (29 Oct 2025)

💡 Keep the order of dates clear: 2 April (announcement), 9 April (pause), 12 May (US–China Geneva deal), 27 August (50% on India).

📝 5-question quiz on this lesson: enrol free to take it and track your score.

2. Artificial Intelligence in 2025

Artificial intelligence (AI) was one of the biggest global topics of 2025. There were new summits, new laws and big awards for AI research. India played an active role.

AI Action Summit, Paris

  • The AI Action Summit was held in Paris on 10–11 February 2025 at the Grand Palais.
  • It was co-chaired by French President Emmanuel Macron and Indian PM Narendra Modi.
  • Many countries, including India and China, signed a statement on 'inclusive and sustainable' AI. The United States and the United Kingdom did not sign it.
  • India was announced as the host of the next AI summit (the AI Impact Summit).

Rules for AI

  • The European Union's AI Act is the world's first broad law on AI. Its bans on 'unacceptable risk' AI practices started applying on 2 February 2025.
  • Its rules for general-purpose AI models started applying on 2 August 2025.
  • BRICS leaders adopted a statement on the global governance of AI at the Rio summit in July 2025.

AI research and industry

  • In January 2025 the Chinese company DeepSeek released its R1 reasoning model, which drew global attention for its low reported training cost.
  • Andrew Barto and Richard Sutton received the 2024 ACM A.M. Turing Award (announced in March 2025) for their foundational work on reinforcement learning.
  • The 2025 Nobel Prize in Physics went to work on quantum effects in electrical circuits, which is the basis of some quantum computers (see Module 5).
Quick facts
AI Action Summit
Paris, 10–11 Feb 2025; co-chaired by France and India
Did not sign Paris statement
United States and United Kingdom
EU AI Act
Bans applied from 2 Feb 2025; general-purpose AI rules from 2 Aug 2025
Turing Award (2024, given 2025)
Andrew Barto and Richard Sutton: reinforcement learning
DeepSeek-R1
Chinese AI model released January 2025

💡 The Turing Award is called the 'Nobel Prize of computing'. Note that the award named '2024' was announced in March 2025.

📝 5-question quiz on this lesson: enrol free to take it and track your score.

3. Space, Health and Climate

2025 had many firsts in space, new malaria-free countries, and more warnings about global warming. This lesson collects the key facts.

Space missions

  • On 2 March 2025 the Blue Ghost lander of US company Firefly Aerospace landed in Mare Crisium on the Moon. It was the first fully successful lunar landing by a private company.
  • On 18 March 2025 NASA astronauts Sunita Williams and Butch Wilmore returned to Earth after about nine months (286 days) in space. Their planned short test flight on Boeing's Starliner had been extended.
  • Axiom Mission 4 (Ax-4) launched on 25 June 2025. Group Captain Shubhanshu Shukla became the first Indian to visit the International Space Station; the crew returned on 15 July 2025.
  • NISAR, the joint NASA–ISRO Earth observation satellite, was launched on 30 July 2025 on GSLV-F16 from Sriharikota.
  • China launched Tianwen-2 on 29 May 2025 to collect samples from the near-Earth asteroid Kamoʻoalewa and later study a comet.

Astronomy

  • The Vera C. Rubin Observatory in Chile released its first images in June 2025.
  • On 1 July 2025 astronomers discovered comet 3I/ATLAS. It is only the third known object to come from outside our Solar System (after ʻOumuamua and Borisov).
  • 2025 was also the UN International Year of Quantum Science and Technology, marking 100 years since quantum mechanics was first developed.

Health and climate

  • WHO certified Georgia, Suriname and Timor-Leste as malaria-free in 2025.
  • The WMO confirmed that 2025 was one of the three warmest years on record, about 1.44 °C above the pre-industrial (1850–1900) average.
  • According to the WMO, the years 2023, 2024 and 2025 are the three warmest years on record.
  • World Water Day 2025 had the theme 'Glacier Preservation', in line with the International Year of Glaciers' Preservation.
Quick facts
Blue Ghost
First fully successful private Moon landing, 2 Mar 2025
Sunita Williams & Butch Wilmore
Returned 18 Mar 2025 after 286 days
Ax-4
Shubhanshu Shukla, first Indian on the ISS (June–July 2025)
NISAR
NASA–ISRO satellite, launched 30 July 2025 on GSLV-F16
Tianwen-2
China's asteroid sample-return mission, launched 29 May 2025
3I/ATLAS
Third known interstellar object, found 1 July 2025
Malaria-free 2025
Georgia, Suriname, Timor-Leste

💡 Interstellar objects in order: 1I/ʻOumuamua (2017), 2I/Borisov (2019), 3I/ATLAS (2025). The number before 'I' tells you the order.

📝 5-question quiz on this lesson: enrol free to take it and track your score.

Other modules in Current Affairs 2025: India & World

Enrol free to access all lessons

Create your account in 30 seconds and start immediately.