In the US State of Arizona, it is not unusual to see rivers that have dried up. Some only flow in specific sections or at certain times of the year. They are known as intermittent rivers. At the...
Elephants, crocodiles, hippopotami… In Botswana, the Okavango delta is a real paradise for the local fauna during the flood, which lasts several months a year. In this documentary, published...
Polar auroras are fascinating events that are regularly visible on Earth. Yet do they occur on other planets, such as Mars for example? And if so, how can they be observed? In this report,...