Space Astronaut blood and piss are key ingredients in new cosmic concrete for construction in outer space David Pescovitz
timelapse Watch this 1-minute time-lapse of a 4-year performing arts center construction project Mark Frauenfelder
History Watch this impressive c.1929 footage of construction workers atop NYC's Chrysler Building David Pescovitz
coronavirus Incredible time lapse video of coronavirus hospital that China built in just 10 days David Pescovitz