Volume 323, Issue 2
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Features
Animals Use Social Distancing to Avoid Disease
Lobsters, birds and some primates use quarantine to ward off infections
Galileo's Lessons for Living and Working through a Plague
An outbreak in Italy in the 1630s forced him to find new ways of doing his research and connecting with his family
How Climate Change Strategies That Use Biomass Can Be More Realistic
Current plans for drawing down carbon dioxide call for more trees, grasses and crop residues than Earth can spare
How Scientists Solved One of the Greatest Open Questions in Quantum Physics
The story of a macroscopic quantum system and a mathematical odyssey
GDP Is the Wrong Tool for Measuring What Matters
It’s time to replace gross domestic product with real metrics of well-being and sustainability
How Oak Trees Evolved to Rule the Forests of the Northern Hemisphere
Genomes and fossils reveal their remarkable evolutionary history
Humans Evolved to Be Friendly
Cooperation made Homo sapiens the last human species standing