The irregular, swirling motion of fluids we call turbulence can be found everywhere, from stirring in a teacup to currents in ...

Quasi-periodic oscillations (QPOs) are a rare phenomenon in active galactic nuclei. They have been observed to occur at ...

Methane is a powerful greenhouse gas with strong heat-trapping capabilities. Although there is less methane in the atmosphere than carbon dioxide, the foremost greenhouse gas, researchers attribute 30 ...

Close-up observations of the Sun explain how solar flares start, grow, and send high-energy particles racing through space.

The study of climate change has been based strongly on data collected from instruments, but how local people perceive such changes remains poorly quantified. We conducted a meta-analysis of climatic ...

Short, unannounced classroom visits are the best way for principals to see representative slices of teaching (not the dog-and-pony show), give credible feedback to teachers, and be players in ...

Sometimes, someone close to the industry comes out with some comments that distill many of the big ideas that people have about the direction that the world is going in with AI. That’s on display in a ...

The Center for Teaching & Learning (CTL) at CU Boulder offers free and confidential classroom observations for educators at all levels. Whether you’re a tenured professor, teaching professor, lecturer ...