Studies of ancient terrestrial rocks suggest liquid water existed on Earth as early as 100 million years after the sun's formation–practically "immediately" on an astrophysical timescale.

a Public Health expert at the University of Ilorin Teaching Hospital (UITH), has raised concerns about the dangers of drinking bottled water and soft drinks left under excessive sun, highlighting ...

On a much larger scale, solar-thermal power plants employ various techniques to concentrate the sun's energy as a heat source. The heat is then used to boil water to drive a steam turbine that ...