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The Rise of the First Animals
Evolution

The Rise of the First Animals

New fossils and analyses of ancient ocean chemistry reveal the surprisingly deep roots of the Cambrian explosion

By Rachel A. Wood
The Experiment That Will Probe the Deepest Recesses of the Atom
Physics

The Experiment That Will Probe the Deepest Recesses of the Atom

Where do protons and neutrons get their mass and spin? Surprisingly, we don't know. A new facility promises to peek inside these particles to find answers

By Abhay Deshpande and Rikutaro Yoshida
Meet the Animals That Literally Sleep with One Eye Open
Evolution

Meet the Animals That Literally Sleep with One Eye Open

Why dolphins, seals and other animals developed the capacity to sleep with half their brain awake

By Gian Gastone Mascetti
Yes, Climate Change Is Making Severe Weather Worse
Climate

Yes, Climate Change Is Making Severe Weather Worse

Recent disasters show how climate change is making winter storms, flooding rains and summer heat waves more extreme

By Jennifer Francis
Could a Single Live Vaccine Protect against a Multitude of Diseases?
Medicine

Could a Single Live Vaccine Protect against a Multitude of Diseases?

A controversial theory holds that one immunization, given properly, can protect against many diseases besides its target

By Melinda Wenner Moyer
We Can't Count on Missile Defense to Defeat Incoming Nukes
Policy & Ethics

We Can't Count on Missile Defense to Defeat Incoming Nukes

Missiles designed to destroy incoming nuclear warheads fail frequently in tests and could increase global risk of mass destruction

By Laura Grego and David Wright
Could the Next Big Information Technology Be ... DNA?
Medical & Biotech

Could the Next Big Information Technology Be ... DNA?

How DNA is used to store—and generate—information at extreme scales

By James E. Dahlman

Departments

  • From the Editor

    Understanding through Time

  • Letters

    Readers Respond to the February 2019 Issue

  • Advances

    Minorities Breathe More Than Their Share of Polluted Air

  • In Case You Missed It

  • Slime Thinks Fast and Slow

  • Zapping Nerves with Ultrasound Could Treat Inflammation  

  • Deer Get by with a Little Help from Bat Friends  

  • Cats Recognize Their Own Names--Even If They Choose to Ignore Them

  • Simulating Evolution to Determine the Fastest Wing

  • Monkeys Use Alarm Calls to Tell Predators to Scram  

  • An "Internet of Plants" Could Tell Farmers When Crops Need Watering

  • Forum

    We Need More Women Working in the Energy Sector

  • The Science of Health

    Is Pot Any Good for Treating Pain?

  • The Science Agenda

    Bag Bans Won't Solve the Plastic Pollution Problem

  • Recommended

    An Intimate Portrait of Asian Elephants, A Case for Math-Driven Physics, and Other New Science Books

  • Anti Gravity

    Calculus Reveals the Universe—and Can Make a Tuna Melt Sandwich

  • 50, 100 & 150 Years Ago

    Rubella Vaccines Succeed; Alcock and Brown Fly across the Atlantic

  • Graphic Science

    Follow the Water

  • The Intersection

    Online Voting Seems like a Great Idea--Until You Look Closer

  • Ventures

    Virtual Assistants Are Getting Smarter All the Time. Can We Trust Them with Our Data?

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Scientific American Health & Medicine

Scientific American Health & Medicine