Add Yahoo as a preferred source to see more of our stories on Google. President Trump at a recent press conference in Miami. (Kevin Lamarque/Reuters) President Trump announced on Wednesday that he is ...

Physicists have solved a long-standing problem involving systems that appear to violate Newton’s third law, such as bird flocks and bacterial swarms. By adding carefully designed “imaginary partners” ...

To understand where Earth might be headed, it's important to know where it has been. Throughout its existence, especially over the past couple of million years, Earth has experienced periodic cold and ...

A common eye-health nutrient, zeaxanthin, may also help the body fight cancer more effectively. Scientists discovered it strengthens T cells and enhances the impact of immunotherapy treatments. Found ...

In the second opinion announced Tuesday morning, the Supreme Court issued its decision in Exxon Mobil v. Corporacion Cimex, S.A., a case addressing whether the Helms-Burton Act abrogates foreign ...

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This crossword is inspired by the most recent issue of Scientific American. Read it here. Print readers, check your answers by selecting “Assist” above and then “Reveal Grid” or by selecting “Print” ...