Several key moments in Earth's history help us humans answer the question "How did we get here?" These moments also shed ...

A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million years before oxygen began to significantly accumulate in the atmosphere, based on nitrogen isotope ...

Gun violence disproportionately affects communities of color, reinforcing racial disparities within the criminal justice system. This issue is closely ...

Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to ...