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Gun deaths in US remain highest among high-income nations

Gun deaths are a serious public health issue in the United States and the scope of the problem is often difficult to illustrate. A new study published inThe American Journal of Medicine lays out the risk in concrete terms. When compared to 22 other high-income nations, Americans are ten times more likely to be killed by a gun than their counterparts …

Mars

New discoveries show that Mars may have once been habitable

A recent study using data from NASA’s Curiosity rover and published in the Proceedings of the National Academy of Sciences present data showing the presence of nitrates on Mars. This molecule, composed of one nitrogen and three oxygen atoms, may indicate that there was once a nitrogen cycle on ancient Mars, one of the necessary mechanisms on a planet to sustain terrestrial-like …