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A series made possible with generous support from the Lemelson Foundation
Kasper Moth-Poulsen shows off the solar collector his team used to test its liquid battery.
Johan Bodell/Chalmers University of Technology
A new kind of glass can keep itself clean underwater. The key is microscopic pancake-shaped structures that let liquid flow between them.
ES3N/iStockphoto
Researchers 3-D print a green spiral of cyanobacteria onto a mushroom. The microbes give off electrons when exposed to light. Those electrons flow into the black graphene ink to produce an electric current.
American Chemical Society
A new bandage uses electrical pulses to help wounds heal faster. It’s powered by the patient’s natural body motions.
Sam Million-Weaver/Univ. of Wisconsin–Madison
A special pen heats the blue ink on this rewritable paper. As the ink warms, it turns clear. The white paper beneath reveals a written message.
Luzhuo Chen
A soft and squishy robo-jellyfish pumps its way gently through the ocean, providing little or no disturbance to local sea life.
Jennifer Frame, Nick Lopez, Oscar Curet and Erik D. Engeberg/IOP Publishing
Parasites belonging to the species Naegleria fowleri, sometimes known as brain-eating amoebas, can destroy brain tissue — and kill human victims within a week.
Govinda S. Visvesvara/CDC
It took over two minutes for high-pitched smoke alarms to wake kids up. It took a motherly voice just two seconds.
nikkytok/iStockphoto
These so-called tweezers can take out single molecules or structures from individual cells — such as mitochondria from nerve cells (illustrated here).
IMPERIAL COLLEGE LONDON
Polymers are an important ingredient in many materials, including the colorful plastics shown here. Scientists have developed a new polymer material to help repair small cracks that might develop in such polymer-based products.
XXLPhoto/iStockphoto
Thousands of fly maggots can demolish an entire pizza in about two hours.
Sean Warner
These girls are standing inside a Faraday cage. They are protected from the electricity zapping on the outside.
Antoine Taveneaux/Wikimedia Commons (CC BY-SA 3.0); adapted by L. Steenblik Hwang
Once a land hermit crab grows to the limit of its shell, it must find a bigger shell if it wants to grow more.
M. Laidre
This is an artist’s interpretation of what the black hole named Cygnus X-1 might look like. It formed after a large star imploded on itself. The intense gravity of this black hole is drawing in mass from a nearby blue star.
NASA/CXC/M.Weiss
Cameras set up in the Arctic’s Chukchi and Bering seas (one shown) record the amount of light that reaches water through the ice. More light means more algal blooms.
K. Frey/Clark University
First-person shooter games made up one-fourth of all video games sold in the United States in 2017.
PaSta77/iStock/Getty Images Plus
A fever may be (mostly) good for us, whether we're babies, teens or adults. A new study shows how it speeds infection-fighting cells to where they’ll do the body good.
Aynur_sib/iStockphoto