A straightforward conjecture about runners moving around a track turns out to be equivalent to many complex mathematical ...

Environmentalists say the war’s effects on oil and gas prices are an argument for countries to get off fossil fuels. But the reality is likely to be messier. By Brad Plumer and Lisa Friedman The ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...