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The Cause of Depression Is Probably Not What You Think
Depression has often been blamed on low levels of serotonin in the brain. That answer is insufficient, but alternatives are coming into view and changing our understanding of the disease.
What Causes Alzheimer’s? Scientists Are Rethinking the Answer.
After decades in the shadow of the reigning model for Alzheimer’s disease, alternative explanations are finally getting the attention they deserve.
How Genes Can Leap From Snakes to Frogs in Madagascar
The discovery of a hot spot for horizontal gene transfer draws attention to the possible roles of parasites and ecology in such changes.
Biologists Use Genetic Circuits to Program Plant Roots
Using inserted genetic circuitry, synthetic biologists controlled the growth of plant roots for the first time.
In Sexy Worms, Inheritance Beyond Genes Can Help Evolution
Traits from RNA molecules passed between multiple generations of worms can work with genetic changes to influence future evolution.