It is not the man who takes the sea. No need to draw up here the long list of disasters caused by global warming. This drama of the century - causing in particular the rise in sea levels and the increase in global temperatures - has an increasingly dangerous impact on life (it is already attributed one in three deaths linked to heat). Consequently, all the innovations to fight against it are welcome, like the “Saildrones”, autonomous solar sailboats which cross the Pacific.

Self-contained kayaks. Manufactured by a Californian company of the same name , the Saildrones will make it possible to measure certain changes currently occurring on our planet by mapping the seabed, collecting meteorological and ocean data and by counting aquatic populations. Equipped with high-resolution sensors, radars and cameras, they monitor ocean currents, wind speed, solar radiation, sea and air temperature, relative humidity and carbon dioxide emissions and then transmit this data via satellite at Saildrone headquarters.

These bright red 7-meter-long self-contained kayaks feature a sail with solar panels, allowing them to be both powered by the sun and blown by the wind. Piloted by artificial intelligence, Saildrones can carry out missions all over the world on their own without any human assistance for months. Even in harsh environments like the Arctic. That said, the company keeps a real-time, daily eye on the progress of drones.

Unrealizable. You have probably heard the figure a thousand times, but remember, the oceans represent more than 70% of the Earth's surface. And to map all of these oceans (yes, all of them), the company designed a giant 22-meter Saildrone named Surveyor . A mission of importance especially when we know that less than 20% of our oceans are mapped while understanding the seabed is essential to understanding underwater tides, tsunamis or geo-risks. Thanks Saildrone.