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News Articles: convergent evolution

Caecilians are amphibians that look superficially like very large earthworms. New research suggests that at least one species of caecilian also produces "milk" for its hatchlings.

Researchers have found an amphibian that makes milk for its babies

The snake-like amphibian is native to Brazil. Researchers say the milk in many ways resembles that produced by mammals.

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By:
  • Geoff Brumfiel
An electron microscope image shows a SARS-CoV-2 particle isolated in the early days of the pandemic. It's been nearly a year since omicron was first detected, and scientists say this branch of the coronavirus family tree is still thriving.

Omicron keeps finding new evolutionary tricks to outsmart our immunity

SARS-CoV-2 is evolving "rapidly," spawning one new variant after another. But omicron continues to dominate, raising new questions about how evolution of the virus is headed.

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By:
  • Rob Stein