Study shows properly maintained roofing can last as long as buildings.
Study shows buildings such as hospitals could cut energy use.
Model shows new technology could keep buildings standing after disasters.
Dropping costs, improved efficiency cited as reasons for increased use.
Fortune 200 companies use green certification to verify sustainability, energy savings.
New sanitation options for facilities will protect, repair surfaces.
Glass design repels water and boosts photovoltaic output.
The long and short of roof warranties and certifications.
Design is low-cost and green while providing more energy storage.
Emissions rise marginally in 2013.