In some symbiotic partnerships, an RNA-based mechanism may sabotage the growth of greedy hosts.
Transcription factors that act throughout the genome can arise from mashups of transposable elements inserted into established genes.
A patchwork of genomic differences in the placenta may explain the organ’s “live fast, die young” strategy and its connections to cancer.
An overlooked but powerful driver of cloud formation could accelerate the loss of polar sea ice.