Explore the different types of steel for construction, including structural, rebar, and stainless steel, plus a comparison between ASTM A36 and A572 steel.
Steven Levitsky, profesor de gobierno de la Universidad de Harvard, dice que la disfuncion de la democracia estadounidense y la erosion del discurso civil son motivo de grave preocupacion.
Harvard University government professor Steven Levitsky said the dysfunction in American democracy and erosion of civil discourse are cause for serious concern.