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Bringing communication into the… 19th century

The telegram was once one of the fastest ways to send messages over long distances, revolutionising communication in the 19th century. Its development was closely linked to the electric telegraph, with Samuel Morse helping popularise the system in the 1840s through the use of Morse code. Messages could be sent across cities, countries, and eventually continents in a fraction of the time required by letters, making telegrams vital for business, government, journalism, and personal news.

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How many Humans have ever lived?

Demographers estimate that around 117 billion people have lived on Earth since modern humans first appeared nearly 300,000 years ago. With today’s global population at about 8 billion, that means nearly 7% of all humans who have ever lived are alive right now—a testament to how explosive population growth has been in just the last few centuries.

* This topic has been previously featured. Spaced repetition improves your learning by helping you retain information for longer.

Out With The Old And In With The New

The shift from halogen to LED lighting was a global transition that gathered pace across the 2000s and 2010s, as LEDs became brighter, cheaper, and far more energy efficient. Rather than happening in a single year, the change took place as governments tightened efficiency rules and consumers increasingly chose longer-lasting bulbs with lower running costs. A major milestone came in the European Union, where many halogen bulbs stopped being sold from 1 September 2018, while international energy agencies have since treated LEDs as the clear future of lighting.

Esports

Has grown from a niche hobby into a global entertainment industry, with professional players, packed arenas, and millions of online viewers. Competitive games such as League of Legends, Counter-Strike, and Valorant have helped turn gaming into a serious spectator sport, with teams competing for major prize pools and international titles.

The Great Dividing Range

The Great Dividing Range is the largest mountain range in Australia and one of the country’s most important natural features. Stretching for more than 3,500 kilometres along the eastern side of the continent, it influences climate, river systems, and wildlife across several states.

The Monopoly Paradox

Monopoly wasn’t invented to celebrate real estate tycoons—it was created in 1903 by Lizzie Magie as The Landlord’s Game, a warning about the dangers of concentrated wealth. Ironically, when Parker Brothers later commercialised it, the message flipped—and it became one of the world’s best-selling games about getting rich.

* This topic has been previously featured. Spaced repetition improves your learning by helping you retain information for longer.

Margaret Atwood

Margaret Atwood is a leading voice in modern literature, best known for The Handmaid’s Tale—a dystopian story about a society where women lose their rights.

Her work blends fiction with sharp commentary on power, gender, and the future, often feeling uncomfortably close to reality.

Avicii - The EDM Legend

Avicii, born Tim Bergling in Sweden, rose from producing music as a teenager to becoming one of the biggest names in electronic dance music. He first built attention through remixes and original tracks online, but his major breakthrough came with “Levels” in 2011, a song that became a global hit and helped launch him onto the world stage.

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