RULER (Relative Universal LLM-Elicited Rewards) eliminates the need for hand-crafted reward functions by using an LLM-as-judge to automatically score agent trajectories. Simply define your task in the ...

As world leaders arrive in New York City for Climate Week, the United States has all but left the global fight against climate change under President Trump. By David Gelles It’s the busiest week of ...

The park has snow-capped peaks, deep valleys, and lush forests, all accessible without special hiking equipment or expertise. Evie Carrick is a writer and editor who’s lived in five countries and ...

The leaders told us how they are facing a warming planet in a world where international collaboration on climate change is fraying. By David Gelles I host the Climate Forward newsletter and live event ...

Women make up only 4 percent of construction workers on job sites working with tools. Some are worried that tariffs on building supplies will slow down commercial building construction. In Chicago ...

Reed Weimer walks last month toward the tower that is being restored and projected to open to the public in 2026. The World’s Wonder View Tower, off Interstate 70 outside Genoa, entertained travelers ...

The deterioration of democracy is part of a trend that is global and pervasive. Approximately a third of the world population now lives under authoritarian rule. At the end of 2023, there were 18 ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, ...

I remember when my parents would play Louis Armstrong’s famous ballad “What A Wonderful World.” It was one of my father’s favorite tunes. A man of color sang about his life in a wonderful world, with ...

“We are the sickest country in the world; that’s why we had to fire people at the CDC,” Robert F. Kennedy Jr. claimed at a September 4, 2025 Senate hearing to explain his actions. “They did not do ...

Minutes after conservative political activist Charlie Kirk was shot yesterday at a speaking engagement at Utah Valley University, jarring videos of the incident began circulating on apps like TikTok, ...

Charlie Kirk was shot and later died at a speaking event in Utah on Wednesday, prompting emotional reactions from prominent figures across sports. President Donald Trump later announced that Kirk had ...