As the war grinds on, sophisticated Russian defenses have pushed Ukraine to develop a frightening new weapon: semiautonomous killing machines.

We are not accustomed to destruction looking, at first, like emptiness. The coronavirus pandemic is disorienting in part because it defies our normal cause-and-effect shortcuts to understanding the ...

Heliophysics missions are quietly entering a pivotal phase, shifting from design and launch campaigns into […] ...

When you’re evaluating a potential investment, you likely look at profitability and growth, but there is one fundamental concept you must master first: liquidity. Just as a household needs enough cash ...

Amid sky-high inflation, water and energy cuts and prospects for a deal with the U. S. dimming, President Masoud Pezeshkian has apparently thrown up his hands. By Farnaz Fassihi and Leily Nikounazar ...

Nearly a year since Trump took office, the Education Department’s Office for Civil Rights has not entered into a single new resolution agreement involving racial harassment of students. Credit: ...

AI companies are engaged in an expensive arms race to attract users and alleviate public anxiety about the technology. The move taps one of the most senior women on Wall Street to help lead the ...