Scientific American - 11.2019

November 2019, ScientificAmerican.com 19 RICARDO SOLAR IN THE NEWS Quick Hits By Jennifer Leman ANIMAL BEHAVIOR Feather Trap Bra ...

20 Scientific American, November 2019 ADVANCES BIOLOGY Hatchlings with Vision Jumping spider babies are the size of a grain of s ...

November 2019, ScientificAmerican.com 21 SCIENCE SOURCE MEDICINE Seizure Warnings Molecules in the blood could alert those with ...

22 Scientific American, November 2019 NASA ADVANCES SPACE ARCHAEOLOGY History in Orbit Space junk documents humanity’s expansion ...

November 2019, ScientificAmerican.com 23 ANNA SERDYUK Getty Images spective, junk can be very valuable. When we call orbital deb ...

24 Scientific American, November 2019 THE SCIENCE OF HEALTH Claudia Wallis is an award-winning science journalist whose work has ...

...

26 Scientific American, November 2019 VENTURES THE BUSINESS OF INNOVATION Wade Roush is the host and producer of Soonish, a podc ...

...

...

C R Y S TA L S IN TIME Surprising new states of matter called time crystals show the same symmetry properties in time that ordin ...

November 2019, ScientificAmerican.com 29 © 2019 Scientific American ...

30 Scientific American, November 2019 Illustrations by Jen Christiansen The next step in our understanding of crystals is oc- cu ...

November 2019, ScientificAmerican.com 31 Translational Symmetry d Atomic nucleus same laws apply for observers on moving platfor ...

32 Scientific American, November 2019 which spacetime crystals simplify to purely time crys- tals. We are looking, then, for sys ...

November 2019, ScientificAmerican.com 33 and ℏ is the reduced Planck’s constant. Here, although the physical setup does not vary ...

34 Scientific American, November 2019 of many thousands of defects, called nitrogen vacancy centers, in a diamond. In both syste ...

November 2019, ScientificAmerican.com 35 states of matter could empower exquisite measure- ments of distances and times, with ap ...

36 Scientific American, November 2019 BIOLOGISTS ARE RACING to record new species at sites across Colombia. They are using the d ...

November 2019, ScientificAmerican.com 37 Conservation after Conf lict Now that 50 years of war are over, Colombia wants to creat ...