Why

Moon Festival or Mid-Autumn Festival: origin and significance of this Asian festival

Every year, several Asian countries celebrate the Mid-Autumn Festival, better known as the Moon Festival, on the evening of the 15thᵉ day of the eighth lunar month. This year, the date is Monday, October 6, 2025. So, what's the story behind this festival and where does it come from? Let's find out.

April Fools' Day: why do we celebrate Joke Day on April 1? The origins

Every April 1, hoaxes of varying degrees of success make a comeback on April Fools' Day. But why do we celebrate this day and why do we make jokes every April 1? We reveal the history and origins of the April Fool's Day tradition.

Double jet-stream: what is this phenomenon likely to be related to heatwaves in France

For a few days, some scientists only say one thing: “double jet-stream”. This atmospheric air flow could be the explanation of most heatwaves that occurred this summer in France, leading to dramatic fires and a very strong episode of drought. Here is more about that matter.