Arid and semi-arid lands represent 41% of the Earth’s surface, and the proportion is growing. These regions are more vulnerable to global warming than humid areas. If the CO 2 emission rate ...

The red planet appears to be an arid world today, but the surface is full of evidence that water was abundant in the past, as you can find empty river basins, canals, ancient oceans, valleys ...

The exoplanet – a planet outside our solar system – has a mass six times greater than that of Earth, and orbits in the ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.