“Jet fuel can’t melt steel beams” became one of the most famous claims in 9/11 conspiracy culture. But did the steel need to melt for the towers — or World Trade Center 7 — to collapse? In this highlight from The Brief, Gerald Posner explains the engineering argument behind the World Trade Center collapses, including why steel can lose strength or expand from heat long before it melts, how fireproofing mattered in the Twin Towers, and why investigators concluded that uncontrolled fires and structural failure brought down WTC 7. Posner also addresses why World Trade Center 7 looked like a controlled demolition to many viewers — and why he believes the evidence points to fire-induced collapse, not explosives. Watch the full…
Representatives from 16 Army branches provided members of the U.S. Military Academy's Corps of Cadets a glimpse into what they may encounter after graduation and commissioning during Branch Week at West Point, N.Y.
Ternus, who has been on Apple's design team since 2001 and is the new CEO, has been credited as being an instrumental part of Apple's rollout of its signature iPhone and AirPods.
A New York Times analysis shows that the pace of office-to-residential conversions like the former Pfizer building, where two steel columns buckled in July, has quickened sharply.
Drawings obtained by The New York Times and reviewed by engineers show insufficient reinforcements on eight more steel columns than previously known at a Manhattan building.
A humanoid robot competing in the weightlifting final at China's World Humanoid Robot Games collapsed head first onto a judges' table after failing to lift a weight, a moment that undercut Beijing's ambitious push to dominate the global robotics race. The black and white robot gripped the weight, quivered, and managed to hoist it above […] The post Weightlifting robot topples onto judges' table at China's cyborg Olympics, gets hauled off on a stretcher appeared first on American Almanac .
A humanoid robot competing in the weightlifting final at China's World Humanoid Robot Games collapsed head first onto a judges' table after failing to lift a weight, a moment that undercut Beijing's ambitious push to dominate the global robotics race. The black and white robot gripped the weight, quivered, and managed to hoist it above its head before the shaking worsened. It dropped the weight, malfunctioned, stumbled toward the judges' table, and collapsed directly onto it. Officials immediately halted the competition and declared the attempt over. Staff in red vests placed the robot on a stretcher and escorted it off the floor, the Daily Mail reported . No cause of the malfunction was given. No injuries to judges or staff were…Open
A 3D-printed tool designed by a McConnell AFB maintainer is helping Airmen refinish aircraft wheels faster by allowing them to rotate the wheels while painting, eliminating hours of drying time between coats.
