91爆料

October 20, 2015

The kilogram has gained weight

The kilogram may need to go on a diet. The international standard, a cylinder-shaped hunk of metal that defines the fundamental unit of mass, has gained weight from surface contamination.

October 20, 2015

Duh! 12 obvious science findings of 2012

For scientists, an answer to a question, or solution to a problem, is not true until proven so. And sometimes that means revealing what mere mortals already knew.

October 20, 2015

Samsung's Solve for Tomorrow contest inspires students to pursue STEM

Samantha Hoover, 14, said it didn鈥檛 sink in that she would be presenting work she did for a school project at the 2015 Samsung Solve for Tomorrow event in New York City until she stepped on the plane. It was the first visit to the city for the ninth grader from James Campbell High School in Ewa Beach, Hawaii.

October 20, 2015

Something Congress could agree on: Helium

Congress is so mired in gridlock that it couldn鈥檛 agree upon a basic funding bill, resulting in a partial shutdown of government. But helium? Now there's an inert gas this inert Congress can agree on.

February 5, 2015

Celebrity scientists: Stars who love science

These stars were science geeks before they pursued careers in acting.

January 13, 2015

Coincidence? The 9 craziest cases of simultaneous invention

Throughout history, major scientific breakthroughs and notable inventions have occurred simultaneously and independently among different thinkers and inventors, who, more often than not, had no direct contact with each other. The phenomenon is known as "multiple discovery." The only problem? Who gets credit? In the case of "the first flight," the argument continues.