The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The hydrogen molecule H 2 is the simplest stable molecule, with two protons and two electrons bound together. Scientists have studied it for more than a century because it’s small enough that theory ...

Learn how basic physics can be used to estimate solar power output with simple, logical calculations. This video explains solar irradiance, energy conversion, and efficiency in a clear, intuitive ...