The Mathematics of How Connections Become Global
Percolation theory illuminates the behavior of many kinds of networks, from cell-phone connections to disease transmission
Volume 324, Issue 4
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Features
Can Natural Gas Be Part of a Low-Carbon Future?
A sweeping overhaul could make the gas system a much cleaner energy source
Adaptive Optics Branches Out
A tool built for astronomy finds new life combating space debris and enabling quantum encryption
How to Debunk Misinformation about COVID, Vaccines and Masks
We each have more power to be a science communicator than we realize
How to Make a Hippogriff Fly and Other Flights of Fancy
A paleontologist and an illustrator team up to make mythical creatures follow biomechanical rules
Telescopes on Far Side of the Moon Could Illuminate the Cosmic Dark Ages
Instruments deployed on missions to the lunar far side might give us an unprecedented view of the early universe
Dark Matter’s Last Stand
A new experiment could catch invisible particles that previous detectors have not
Departments
Advances
Dire Wolves Were Not Really Wolves, New Genetic Clues Reveal
This Flower Is Really a Fungus in Disguise
Killer Leaves Emerge from Plant-Butterfly Arms Race
Forecast or Remember: The Brain Must Choose One
In Case You Missed It
Vaccine Could Save Critical Tiger Population
Volcanic Ash Threatens Pompeii's Buried Murals
Wildfire Recovery Aided with Planting Model
Data Show Shifting Colors of U.S. Rivers
Policy
How to Be an Effective Science Communicator
Readers Respond to the December 2020 Issue
Stop Domestic Terrorism
Scientists Should Admit They Bring Personal Values to Their Work
50, 100 & 150 Years Ago: April 2021
Climate Change
We Need a National Institute of Climate Change and Health
Culture
Poem: 'Picture a Clerihew'
Sweeping Whale Streaming Series, Profile of CRISPR Discoverer and an Examination of Future Realities
Public Health
At Last, Some Help for Meth Addiction
Fitness