Biomedical engineers have demonstrated that, despite significant advancements in protection from ballistics and blunt impacts, modern military helmets are no better at protecting from shock waves than their World War I counterparts. One model in particular, the French Adrian helmet, actually performed better than modern designs. The research could help improve the blast protection of future helmets through choosing different materials, layering multiple materials of different acoustic impedance, or altering their geometry.
A new study reveals a previously unknown cost of nuclear war -- shifts in ocean chemistry that could have serious consequences for the world's coral reefs and other marine life.
A nuclear war that cooled Earth could worsen the impact of ocean acidification on corals, clams, oysters and other marine life with shells or skeletons, according to the first study of its kind.
New research challenges claims by special interest groups and popular culture about the personal benefits of gun ownership. University of Arizona sociologist Terrence Hill found that gun owners and non-gun owners report about the same levels of happiness and sleep disturbance.
The materials the United States and other countries plan to use to store high level nuclear waste will likely degrade faster than anyone previously knew, because of the way those materials interact, new research shows. The findings, published today in the journal Nature Materials, show that corrosion of nuclear waste storage materials accelerates because of changes in the chemistry of the nuclear waste solution, and because of the way the materials interact with one another.
Online discourse by users of social media can provide important clues about the political dispositions of communities. New research suggests it can even be used by governments as a source of military intelligence to estimate prospective casualties and costs incurred from occupying foreign territories.
Researchers from Michigan State University measured the extent to which mass shootings are committed by domestic violence perpetrators, as well as identyifying how they illegally obtain guns, suggesting how firearm restrictions may prevent these tragedies.
It has been 30 years since the end of the Cold War, yet on average, Americans still perceive that the odds of a nuclear weapon detonating on U.S. soil is as likely as a coin toss, according to new research from Stevens Institute of Technology.
Researchers at Texas A&M University have formulated a new recipe that can prevent weaknesses in modern-day armor. By adding a tiny amount of the element silicon to boron carbide, a material commonly used for making body armor, they discovered that bullet-resistant gear could be made substantially more resilient to high-speed impacts.
306 law enforcement officers from 18 agencies were involved in a simulation examining impact of dispatch information on an officer's decision to fire their weapon. When officers were told the subject had a gun but were then shown a video of a man rapidly producing a cellphone, 62% of officers shot. The findings show a relationship between inaccurate dispatched information about the presence of a weapon and police shooting errors, especially shootings of unarmed subjects.