Literature, most generically, is any body of written works. More restrictively, literature writing is considered to be an art form, or any single writing deemed to have artistic or intellectual value, often due to deploying language in ways that differ from ordinary usage.
The death of Dr. Hudson is a loss to the republick of letters.
William King, letter (Jan. 7, 1719). Same phrase occurs in the Spectator. Commonwealth of letters is used by Addison, Spectator, No. 529. Nov. 6, 1712.
Renewable energy resources (RES) such as wind, solar, hydro, geothermal and biomass can significantly offset the world's demand for fossil fuel-derived electricity. A new EU study points the way to expansion of current networks to efficiently integrate RES.