Explanation

• The Sahara Desert is the largest hot desert in the world.
• Location: Africa
• Length: Approximately 4,800 km (3,000 miles)
• Area: About 9.2 million km²

List of top deserts in the world:

Last verified on 10-05-2026

Explanation

• Largest country in Arabian Peninsula: Saudi Arabia
• It covers about 80% of the Arabian Peninsula.
• Area: 2,149,690 km² (2.15 million km²)
• Capital: Riyadh
• Currency: Saudi Riyal
• Official Language: Arabic

Additional information:

Arabian Peninsula Countries (7):

1. Saudi Arabia
2. Yemen
3. Oman
4. United Arab Emirates (UAE)
5. Kuwait
6. Qatar
7. Bahrain

Last verified on 16-06-2026

Explanation

• Habsha is the historic name for Ethiopia.
• It is located in the Horn of Africa.
• The Migration to Abyssinia, also known as the First Hegira.

Last verified on 19-03-2026

Explanation

• George Washington was the first President of the USA.
• He was serving from 1789 to 1797.
• He is often called the "Father of His Country" for his leadership in the founding of the United States.

Additional information:

The short list of Presidents of USA:

• 1st. George Washington
• 2nd. Adams John Adams
• 3rd. Thomas Jefferson
• 15th. James Buchanan
• 16th. Abraham Lincoln
• 17th. Andrew Johnson
• 44th. Barack Obama
• 45th. Donald Trump
• 46th. Joe Biden
• 47th. Donald Trump (Current)

Last verified on 07-06-2026

Explanation

• Alexander Fleming discovered Penicillin
• At St. Mary's Hospital in London
• In September 1928.
• First true antibiotic used to treat bacterial infections.
• First patient treated was Albert Alexander, a 43-year-old policeman, on 12 February 1941

Last updated by NA on 23-April-2026

Explanation

The following nine countries are declared nuclear powers: 

1. USA
2. Russia
3. UK
4. France
5. China
6. India
7. Pakistan
8. Israel
9. North Korea

Nuclear weapons first developed in 1945 (USA).

Nuclear powers are divided into:

1. Official (NPT recognized): USA, Russia, UK, France, China
2. Non-NPT / de facto: India, Pakistan, Israel, North Korea

Last verified on 06-06-2026

Explanation

• Greenland is the world’s largest island.
• It is located between the Arctic and Atlantic Oceans.
• It belongs to the Kingdom of Denmark.
• Population is about 56,000 people only.
• Area: 2.131 million km²
• Maximum width: 1,050 km
• Location: North America region (Arctic area)
• Capital: Nuuk

Last verified on 06-06-2026

Explanation

• The novel “Nineteen Eighty-Four” (1984) is written by George Orwell.
• It was published in 1949.
• It presents a dystopian future under a totalitarian government.
• The story warns about surveillance, loss of freedom, and state control over truth and society.

Last verified on 06-06-2026

Explanation

• Author: Stephen Hawking
• Book Title: A Brief History of Time
• Main Topic: Universe (origin, structure, evolution, and fate)
• First Published: 1988
• Publisher: Bantam Dell Publishing Group
• Copies Sold: ~10 million
• Languages: 40 languages

Last verified on 01-06-2026

Explanation

• The Pacific Ocean is the largest and deepest ocean on Earth.
• It covers about 30% of the Earth's surface.
• It contains 97% of the Earth's water.
• The Mariana Trench, the deepest part of the ocean.
• It is located in the Pacific.
• The Arctic Ocean is connected to the Pacific Ocean via the Bering Strait.

Additional information:

• Oceans cover 71% of the Earth's surface.
• The Indian Ocean is the warmest, with the Persian Gulf being the hottest area.
• The Diamantina Trench is the deepest point in the Indian Ocean.
• Jordan does not have an ocean.
• The Arctic Ocean is the Smallest Ocean of the world.

Last verified on 27-05-2026