![Scientific American Magazine Vol 324 Issue 5](https://static.scientificamerican.com/sciam/cache/file/56C71A02-4725-468D-B5671F866873921E_source.jpg?w=300)
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Features
Will Probiotics Save Corals or Harm Them?
Bacteria are helping corals in lab tests, but risks rise as treatments are applied in the wild
The Art of Mathematics in Chalk
A photography project reveals the allure of equations in mathematicians’ blackboard work
World's Largest Map of Space Offers Clues on Dark Energy
A new chart of millions of galaxies across 11 billion years of cosmic history helps to answer some of the biggest cosmological questions
Damage to a Protective Shield around the Brain May Lead to Alzheimer's and Other Diseases
The blood-brain barrier deteriorates with aging, but animal studies indicate repairs can make old brains look young again
Adolescent Brains Are Wired to Want Status and Respect: That's an Opportunity for Teachers and Parents
Advances in neuroscience and psychology could lead to real-world benefits in education and mental health
Genomes Reveal Humanity's Journey into the Americas
DNA has upended neat and tidy accounts of the peopling of the American continents
Are Dolphins Right-Handed or Left-Handed?
That is a trick question because dolphins obviously don’t have hands. But studying whether they have “handedness” led to identifying a quirk of human perception