The SciencesMay 16, 2015
The Amtrak Derailment and Newton's First Law
If speed was the problem, then here is the physics of what may have happened
Stories by Sara Rennekamp
The SciencesFebruary 9, 2015
How a Wire Was Used to Measure a Tiny Force of Gravity
The crowning achievement of the 18th-century researcher was the design of the first experiment to measure the force of gravity between masses in a lab