pathogens

Illegal animal trade increases the chance of diseases being transmitted from animals to humans. Illustration: depositphotos.com

Research in Science: Wildlife trade increases the risk of transmitting pathogens to humans over time

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Analysis of 40 years of data shows that mammals traded on the global market share more pathogens with humans, and that each additional decade of trade adds, on average, one more shared pathogen
Ancient DNA from Denisovans left humans with a significant genetic advantage — a gene variant that could have helped early Americans survive new pathogens, and may still affect our health today. It allowed the Sherpa tribe of Nepal to live easily in the Himalayan highlands. Illustration: depositphotos.com

The hidden Denisovan gene that helped humans conquer the Americas

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Traces of long-buried Denisovan DNA are resurfacing in the genomes of modern humans—and they may still be working in our favor today
Microglial cells (in green) in the hippocampus region of the brain of an adult mouse, forming contact points with a new neuron (in red)

The biology of depression

Degeneration of the cells of the immune system in the brain may be the biological cause of depression, and there may be substances that can restore these cells - and be antidepressants
Illustration: pixabay.

breathe easy

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The development of tuberculosis. Illustration: shutterstock

Deciphering pathogens / Catherine Harmon

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