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On August 28, 1963, Martin Luther King gave a speech that will live long in the memory. For Martin Luther King was a hero of non-violence who fought, in his own country, for equality between black and white people.

An anti-Semite is someone who feels hatred for people of Jewish religion or origin. This can take the form of insults, threats, damage or violent acts against Jews. But why this hatred?

Pesticides are chemical products used in agriculture or in parks and gardens.

Every second, mankind produces more than 100 tonnes of waste worldwide, equivalent to the weight of 20 elephants.

By 2030, manufacturers, consumers and policy-makers will have to find new ways of producing, selling and buying our food.

You have until the end of January to wish your loved ones a Happy New Year. How do other countries celebrate the New Year?

Sweden's Greta Thunberg is a young activist who has set herself the goal of doing everything she can to save the planet. But where does she come from?

Did you know that your voice depends to some extent on the shape of your head? Or more specifically, the hollows formed by your mouth, nose and throat.

Antibiotics are powerful drugs that help fight certain diseases. The effect of these drugs was discovered by Alexander Fleming in 1928.

Frida Kahlo is a famous Mexican painter. She lived in the 20th century, but still inspires many artists today, and her works are exhibited all over the world!

Mathematics is the science of numbers and shapes. It helps us understand how the world and all the other sciences, such as physics, chemistry and computer science, work.

On the Internet, traffickers can sell protected species as pets. This video explains what wildlife trafficking is and why it must be fought.

The Great Green Wall of Africa is a vegetation barrier project designed to halt the spread of the Sahara desert.

The oceans suffer from pollution, and also from certain fishing techniques, such as trawling. This involves dragging huge nets through the water, picking up everything, including fragile species.

What is this much-talked-about Gaza Strip? It's a Palestinian territory. On one side, it borders the Mediterranean Sea. On the other, it's surrounded by Israel and Egypt.