A differential equation is an equality constraining a mathematical function in relation to its derivatives over one or multiple variables. Such equations may constitute the mathematical model for a ...

After Austin auto executive Erik Maund's conviction in a murder-for-hire conspiracy, a judge had ordered a retrial due to procedural errors. Now an appeals court has determined the errors don't ...

Although landlocked, Los Llanos, Guatemala has become like an island. Located just 19 miles south of the country’s capital, the village has become virtually inaccessible thanks to deteriorating roads ...

What are the most pressing global crises in 2026? Each year, the International Rescue Committee’s (IRC) Emergency Watchlist identifies the countries at greatest risk of new or worsening humanitarian ...

The editorial board is a group of opinion journalists whose views are informed by expertise, research, debate and certain longstanding values. It is separate from the newsroom. Thirteen years ago, no ...