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Opinion, arguments & analyses from guest experts and from the editors of Scientific American

Happy, Hot Earth Day! [Interactive]

Happy, Hot Earth Day! [Interactive]

Almost no one had heard of global warming when the U.S. commemorated its first Earth Day 44 years ago. Now most Americans know about anthropogenic climate change--whether or not they accept the science is another story...

April 22, 2014 — THE EDITORS

Twin Earth May Be Better than Earth for Life

Pseudo-Earths are out there. That's the message of today's exciting announcement that a planet about the same size as Earth lives in its star's habitable zone--the temperate region around a star where liquid water might flow...

April 17, 2014 — Michael Moyer
Debate Flares over Identity of Celebrated Human Fossils

Debate Flares over Identity of Celebrated Human Fossils

CALGARY--In 2010 paleoanthropologists announced to great fanfare that they had recovered from a South African cave two partial skeletons of a previously unknown member of the human family that lived nearly two million years ago...

April 17, 2014 — Kate Wong

Beat Jet Lag With This Scientist-Developed App

Fed up with jet lag when you fly long distances? University of Michigan mathematicians have your back. They've developed a free app, available today, based on mathematical models that can tell you when to go outdoors and when to stay in bed to avoid the sleepiness and other side effects of crossing multiple time zones [...]..

April 10, 2014 — Amber Williams

The Day the World's ATMs Stood Still--or Didn't

You're probably on tenterhooks wondering what will happen to your reliable, convenient ATM on April 8, the day Microsoft officially sticks a fork in its hugely popular Windows XP operating system...

April 7, 2014 — Larry Greenemeier

DIY Opioid Antidote Gets Fast FDA Approval

Drug overdoses have become the leading cause of injury in the United States. More people between the ages of 25 and 64 now die from overdose than in car crashes--and prescription drugs are largely to blame...

April 3, 2014 — Dina Fine Maron

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