The ambitious new Dark Energy Survey aims to solve the riddle of why space is expanding at an ever faster pace. By Joshua Frieman.

The construction of Egypt's most famous monument spawned a social organization that changed the world. By Zach Zorich.

As a massive El Nino builds in the Pacific Ocean, researchers hope to make the most of the chance to study it. By Quirin Schiermeier.

City leaders across the Americas are exploiting science to reduce homicide. By Rodrigo Guerrero Velasco.

Sleep On It! Your nightly rest turns out to affect your mind and health more than anyone suspected. By Robert Stickgold.

A huge effort to simulate the human brain is in disarray. Poor management, or a fundamental flaw in Big Science? By Stefan Theil

Engineering & Applied Science professors discuss a project to orbit a space vehicle constellation to generate solar power for Earth.

Everyone makes mistakes. But those of the legendary physicist are particularly illuminating. By Lawrence M. Krause.

Head Trip: Einstein's thought experiments left a long and somewhat mixed legacy of their own. By Sabine Hossenfelder.

Albert Einstein created his most famous theory amid personal strife, political tension and a scientific rivalry. By Walter Isaacson.